I have what I believe you'd call an RC10 Championship Edition and a TQ10. Both cars have the wider front A-Arms, both have the 6 gear transmission... the RC10 CE has the gold tub (A stamp) and the TQ10 has a flat graphite chassis but no AE logo on it that I can see. I remember a few years ago I stupidly threw away the TQ10 manual thinking it was redundant with the RC10 manual. I bought the RC10 new back in the day and I bought the TQ10 used (also back in the day). I'm restoring both vehicles and have a few questions.... sorry if these have been answered already - I did search

1) The only difference (other than the chassis) between my RC10 and TQ10 is that the steering bellcrank isn't the normal servo-saver type apparatus that all the early RC10's had.... its two black solid pieces that have bearings with no "saver" mechanism. Is this the way the TQ10 came stock, or did the guy I bought it from hop it up? The other difference is the motor plate is all black and has a pretty substantial heat sink built right into it... is that stock or a hop-up? If I'd have kept the darn manual, I'd know...
2) This is related to the above.... but what's the difference between the TQ10 and the RC10 graphite? And what's up with the "TQ" designation anyway? Anybody know what years this was produced?
3) The transmission parts all look in good usable condition except for one of them that has really worn outdrives. The place where the dogbone locks in has really dented into the metal over time pretty bad. I haven't been able to find this part on ebay... are these generally hard to come by?
4) I need some new spur gears and pinions. Are there any new spurs that will work?
5) I plan on actually running these vehicles and getting some use out of them. Generally speaking, what are the parts that are going to be: 1- easily broken/worn out and 2- difficult to find and replace ? Are there a lot of such parts? I've already learned the hard way that the front shock tower meets those 2 requirements (and the outdrives from the transmission at least meet #2, if not 1).
That's it for now... thanks.