I had to change both of mine to captured ball ends(nut & bolts) on my Fury and I also changed the position on the hubs from rear to front. I've never had any further problems with them since.
Maverick Strada SC Evo c/w Inix 60A esc & 3200kv 4 pole SKYRC Toro motor
Kyosho Inferno US Sport c/w RB WS7 III with 2047 pipe
HB Lightning Pro 2 Truggy c/w Go .21 5-port with a JP-2 pipe
Arrma Fury ; 5 Mardave 1/12th scale on-roads