What weights should I start with?

That's entirely dependant on pistons, and feel you want.

Weights in the 375-500 weight range should get you close with the stock pistons.

Well when I build the diffs for the first time I wasn't sure whats a good way to start. I have 10k, 7k, 5k, 3k laying around. and various shock oils. I was mostly concerned with diff oils though for the first build. I see in the manual it says 555, but most setup sheets I see 995, or 775.

On a lose track I like 7-7-3. High grip I run 10-7-5

Thanks! I'll definitely start around that, instead of stock... No point immediately checking the diff oil after building it.

I use it. Drops right in. no issues. Switch mounts behind the battery tray. I shoe goo it in and put a dab of shoe goo for the wire to stay secure so it doesn't get into the drive train.

the kit setup will be good but most guys go slightly heavier in the center and front to get more on power steering and more acceleration. It really depends on how you like to drive.

Anyone know how mugen diff fluid compares to PT, I used mugen 7k in the front/center and 5k kit fluid in rear. I am in process of changing everything to pt but probably won't get to before the weekend

I thought I read pt was pretty close to mugen oils.

Ok thanks, thought I read associated and losi was thicker but wasn't sure about mugen

anyone ever bent the main driveshaft ?

yes, two times. after real hard impacts, middle and front chassis braces are used, rear not.

too bad tekno didn't make this shaft a bit shorter to let more room to the chassis flex
that is the weak point of this buggy. but the rest is really tough !

There's probably a good half inch of play front to rear in the front driveshaft. I actually feel it's too much. How much more do you want to allow for bad landings? Not sure I would call that a weak point of the car. Although I did see a picture of a severely bent driveshaft on FB, but couldn't imagine how the heck the guy pulled that off.

I've been running tekno for almost 2 years, and crash rather spectacularly at times, and have yet to bend a driveshaft. I have had my truggy flex enough to have my rear driveshaft pop out though.

I think I may add a chassis stiffner to avoid that flex. of course I do some nasty thing with this car and the durability is amazing so far ( almost 2 lipo through, )