Just received a full set of four of these from SpeedTech R/C. Nice craftsmanship....but they don't seem to want to fit in the F201. One end ball has a pin pushed through it, the other end ball has a larger hole drilled through and two slots machined in it. The pinned end fits fine in the drive axle and the outdrive...it's the other end that doesn't seem to fit anything. Anybody, anybody at all, have you purchased these for your F201 and if you did, what did you do to get them to fit??? HELP!!!!