Went off roading the other day and just got a chance to clean up today. I had a lot of Oklahoma stuck on and under my ride and managed to get most off. Unfortunately, I've now got a vibration when on the highway. I'm thinking there's still some Oklahoma junk stuck underneath and in the suspension which might be causing it. I don't think a normal drive-thru wash is going to dislodge it, so...any tips on how to finish the clean up? Anybody have this problem before?