Well, I ran this engine today. Once I put the fuel tubing on the main needle to help keep it from leaking fuel through the threads of the needle. For some reason, It does not like the pressure line connected. Is this a normal thing for these engines? It will wind out with the line disconnected. Transition is a tad rough, but it gets it done. One problem I do have that I need advice on: While running at WOT, I tried setting the high speed needle, but nothing I did to the needle rich or lean changed how the engine ran. I brought the high speed needle out to 5 or 6 turns and it ran no different than at 2-3 turns. Low needle (according to some fox literature I found, you start the low speed out seated) is out about 1/2 turn right now, but here too no adjustment I made made much of a difference in how the engine ran or idled. I tried 5% and 10% nitro with better results with the 10%. The whole engine is sealed with RTV including the carb base and the setscrew holding it in.