so now that I finally have this all wrapped up and am a bit rested up I wanted to drop a a couple of comments..
1. Snap ring/snap ring groove on the Nitro axle: I've been thinking about this for a couple of days now.. and I frankly don't know how I could possibly have pressed the bearing and retainer down any further... this had to be just a slight difference between a factory axle and the nitro axle replacement.. I bent the tool I bought to remove and install the bearings.. along with a a few other things I've tried. The 20 ton press was literally at a point where it was starting to twist under load and I couldn't pull down on the pump handle any more without bending it. Maybe some of the coating that is on the nitro axles made it a much tougher press fit, the studs certainly took a bit to press in, but I don't know. I would be VERY hardpressed (no pun intended) to believe that the retainer has any hope at all of moving, even with no snap ring in place, and with normal driving condition I just don't see how the retainer can unpress itself, the shaved down snap ring should be perfectly fine. I think I just needed to talk that through for my personal peace of mind, but I don't see anything backing off/breaking here lol.
2. removing factory bearings: This was a monster.. the tool allowed me to take off the retainer and most of the bearing with no issue at all. However, the front side of the bearing/race never came off the factory axle.. I don't know what it would take to get them off.. but luckily for me I just needed the backing plate. If you're reusing the axles, be prepared for some work (either additional pressing or cutting off very carefully). to be able to reuse.
3. Drum brake/parking brake assembly: I can't stress enough how easy this can actually be, at least for me.. I used 2 small zip ties to compress the springs and assemble the whole thing onto each pin and twist it into the locked position. I was then able to pretty easily, but carefully, slide the shoe slots where they needed to go and use a razor blade to cut the zipties. I put both sides completely together in literally less than 30 minutes. The hardest part was not having a decent pair of pliers to stretch the 2 larger springs back on. I still need to make an adjustment to the parking brake. I thought I had did a decent job, but it doesnt hold one bit lol. The adjustment hole is a bit small.. and the new rotors I have a mis-aligned just a bit vertically, so you really need to have a good feel, but it's definitely doable.
4. Rear Wheel Spacers: I want to get away from running a 2" spacer. As much as I love the spacers and feel comfortable running them when done correctly, 2" is just too much. The only reason they were there was to clear the TK1 racing links when the tire is aired down. Since I very rarely rock crawl at 18 psi it doesnt make sense to stress the system with larger spacers... in order to clear these what I did was flip the link mount at the arm itself towards the frame. This is not ideal since the arms now aren't 100% vertical and I cant flip the lower mount to the inside because then it hits my bump stops... but we'll see how it does. I noticed that my drivers side axle tab already bent inward from the previous trip so I may have to beef these up anyway.. At the same time too, having these links at an axle may actually be better for distributing the force as the axle articulates since it doesn't go straight up and down.. so who knows, may be this is actually better. I have a set of 1" spacers on the way and will swap them on tomorrow while also adjusting the parking brake.
5. Boot clamps on the CV axles: When I first got the RCV's I noticed a little burping from the outer boot due to not very tight factory clamps. I "upgraded" to a worm-gear type clamp to remedy the issue, but in the process ended up putting a tear in the boot. I then got a rounded-edge worm-gear clamp and ran that for a bit. When I lost my wheel and shaved down the lower control arm the replacement I got for some reason WOULD NOT clear the extra height of the worm-gear clamp... I tried shaving it down, but it would still rub. Long story short... I went back to a regular clamp-style band clamp and after packing in a bit more grease and clamping down on the new clamp I haven't had any issues... don't make more work for yourself.. just use a regular CV Boot clamp with a proper tool and you'll be ok... lol.