hmmm........ I am out of ideas as to what could be wrong without being able to actually look at it..... if you can make a video of when it bogs down and put it on youtube I can take a look and see if I can figure something else out.

As for Jato's......... FAAAAAASSSSSSTTTT!!!!!!!!!! The new 3.3 are wickedly over powered! So much so that when it pops into second gear it can actually wheelie and flip out of control. I mean those things are crazy fast! You would be moving from a beginner nitro vehicle to an expert nitro vehicle. Also, they are way more durable than the smartechs and the other good thing is that it is easy to get parts for them. So if that sounds appealing, then go for it. Just be prepared, they have massive power for a rear wheel drive vehicle, but I am sure they are fun!

Go to youtube and type in jato 3.3 and watch some of the vids.