rearveiw, you need to do what I did stock up on the parts.when I ordered I did 2 con rods/2sets c clips/2 sets wrist pins. I bought an ebmods 5port off of a gent that lives close to me. It had 1 gallon through it. Now I am coming up to the second gallon, so as a precaution I am replacing the con rod. the go 7 port I just started to break in on this past Saturday. so one rod set will go into the 5port soon. then the other will be there when I need it for the 7 port. I love my go engines, but agree with you on parts. On my eb modded 5 port I am still not sure I like it all that much. the reason is I think it belongs in a truggy. I'll see after I get the 7 going. also I am a beginner racer so the power my be to much for me to handle also.