Well, it seems to be the end of the line for my 3.3 engine boys. Tried continuing the break in process again today and the same stuff started happening again. Stalling at temp, no starting until it cooled down. At this point I'm just wasting gas on the thing. I brought it back into the garage to the work bench and took it apart again. All of the parts that Traxxas replaced are damaged again in an almost identical fashion as the they were the first time. They evidently didn't think that my note saying the problem is with the engine block not the interchangeable parts was very helpful or a correct diagnosis for that matter. I sent it back to them again today. This time I laid down the law, in a nice way of course. If they won't replace the engine for free I don't want it back. So in a few days, I hope to either get a brand new 3.3 or I'll be shopping for an aftermarket engine. I honestly hope that they send me a new engine because when mine was working well, for that oh so short time, it was a great little power plant. If they don't, life goes on and I'm thinking pico .26 or something along those lines. I'll keep you posted. Talk with you all soon...