[Aran]

Rear shock shafts are too long, i ran them for a while and never had a problem but have upgraded to the option shock shafts which are shorter and smoother.

Not sure about the ball cups, I know some people have had issues with them but i found its taught me not to crash :P.

I found the front end was a tight fit when I built mine too, never caused a problem and is solid in a crash.

Hope this helps