Hey guys. I have the original 4x. bought her the first week it was available. I am preparing for my first race this upcoming weekend. I have helped build a new track in Delray Beach, Fl recently with opening day June 3rd. The track is large, and hardpacked clay with a good layer of dust when dry. I was running the castle 3800 4 pole with the 48p spur. was using a 22p pinion and having some nasty slipper problems like i've read on here for nearly a year. When i got home, I took her down and dropped the diff oil in the front. I installed the FT slipper assy with 32p spur but did not use the high torque pads. My originals were glazed so I sanded them a bit and reinstalled them with the FT parts. Now, I get a clicking noise that happens under load. I can't tell if it is the front or the rear. I have tried to tighten the slipper, but it really is a click, not the bark type noise a slipper will give. I have some high torque pads on the way. (here thursday) but think that i may have the diff click i read a short bit about on here.
Time for shims? Also, I don't wanna tear this truck down before my first race because I won't have enough time. can anyone also link me or part number me to the right diff shims for this truck?

Thanks in advance.

Ben