Hey, appreciate the hello!
The 94122's are definitely a bit heavy on the troubleshooting, especially when mostly stock...
First, the exhaust blowing off - I had better luck with aftermarket manifolds, gaskets and even bolts. The stock bolts are kind of garbage, I torqued the head off of one...
My testament to the versatility of the platform.
Built on 2x 94188's and 2x 94122's, bought as rollers.
Each presented its own challenges to make the different engines fit. A dremel has contributed in some way to each one. The brands I've drawn parts from include Kyosho, O.S, Redcat, HPI...