I have a problem with my Kyosho Sandmaster ST-2. I bought it a few years back, and recently started running with it again (it's really great fun!).
Today one of the drive shafts popped right out of the differential for the second time in just a couple of days. This can't possibly be normal, and it takes a while to fix it.
Yesterday I took everything apart and put the drive shaft back (I put the gear from the differential on a hard surface and hit the driveshaft with a rubber hammer until it was inserted all the way through the gear). It really seemed like it was tight and everything. But aparently that wasn't enough.
I really need some advice here, both on the cause of this, and what more I could possibly do to fix it. I might buy a new differential, but only if I know it's gonna last.