More stupid question from me...be prepare for more in future....
I love my MTB after the adjustments above. Rides great. BUT, the damn seat is basically made of concrete i am sure! I got some butt-pads underwear for bikers, but i prefer NOT to use them. What are my options here? Get a new seat? or is there something i can put on the seat itself?
#1 and most important: Define what type of rider you are going to be.
A. Are you going to ride it (like me) daily over 10 miles of singletrack?
B. Or are you going to ride it down the street every now and then and maybe ride a dirt road or path once a month?
This will determine what seat you need. If you go with option A, you need a thin, firm narrow seat. Why? Several reasons. Easier to pedal bike, better position to pedal bike, easier to move around to transfer weight, etc. If you determine this is going to be you, buy a several pair of GOOD bike shorts. Pearl Izumi, etc make nice ones. Also buy some Chamois Butter. Here's the thing - if you pad your bike seat, then the padding is only on the top of the seat. If you pad your ass with quality bike shorts, then the padding is always in the correct place, no matter if you are sitting up on the nose of the seat while climbing or sitting on the rear wheel during a steep decent or drop. It also takes time to get used to a seat like this. They also make several different widths depending on your personal geometry.
Now, if you are option B, just go get a big cushy seat and be done with it. Warning: You will rub yourself raw if you use a seat like this on a long ride. These seats are beach cruiser type for a few mile ride over smooth terrain.
Think about the mechanics for a minute. You sit over the pedals right? Your legs have to extend beside the seat and move up and down to pedal. If you are not riding far then no problem. If you are doing any distance you are going to want a hard seat with the least amount of friction between your thigh and seat, hence padding, spandex and smooth hard seat.
I wear trail shorts over my bike shorts. Nobody wants to see a 54 year old in spandex. Nobody.