Got My weber on and the old hitachi off... It runs a thousand times better.... Theres a "flat spot" now though, when I try to hold it at a certain Rpm in motion, I would say like 2500rpm it boggs and stumbles, but it accelerates ok and idles wonderful its just that one spot, do you think jets, accelerator pump or is my adjustment off? I think I could maybe be off on timing as well...