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Hi Everyone, I am new to this site, new to RC but having a blast with it. It is extremely addictive. Anyways, I bought a beat up used frog. Hooked my transmitter up to it and it ran fine. Of course, this was not good enough. I purchased many hop ups. I got all new parts for the gearbox, new gears, ball bearings, etc. I built the gearbox. I also got the 2005 Universal Shafts for it. I followed the directions (in fact several times). Without wheels on it, the gears are nice and tight, sounds smooth. Once I put wheels on, I hear a grind. This last time I put it back together, I left the boots off to try to see what is happening. It appears that the Gearbox joints on both sides slide out of the gearbox, just slightly. This is enough to make the swing shaft hit the slot in the gearbox joint everytime it rotates, making a grind noise. Has anyone else run into this? What makes this worse is I got so frustrated with it, I put the original hex shafts back on and now they do this as well. Just so you know, The entire rear end is brand new, including the rear arms. HELP!!! Thanks.

Hi guys, While I've been looking for some parts, I found that there are CVD and universal swing shafts. Maybe anyone knows differences between them? Some say it's the exact same thing, but others say, that they perform differently. For me, universals look like a more open version of the CVDs. Which of them would be more durable? Which ones do you prefer? CVDs: Universals: