Love these series. I always learn something. Thank you!

Nezo, I’ve found that MST makes people assemble the main shafts as tight as possible and it does more harm than good. When I’d built mine, I had to take the spacers out to get the gears a little happier. The tight main shaft issue is a problem with ALL RMX 2.0 chassis including the 2.5 and EX series. Take the spacers out and the gears will hold up a little longer.