Hi y'all, new to the forum thing in general, I've got a 2 stroke grubee Skyhawk that I rebuild mostly with a Chinese clone. The clone I ran for about 30 miles but decided it would be better for parts considering the head and cylinder were one piece (ofc the seller online didn't show that). And I'm looking to go with a high compression head, etc. ANYWAYS, the clone with just a larger "performance" carb and a 36t rear sprocket topped out at about 27mph.... Not bad but it usually averaged around 24 and with a 14 miles round trip commute it was painfully slow. Now I'm not shooting for record numbers or ridiculous speed. I know that's not what these were made for. But since I rebuilt the Skyhawk and have gone over it half a dozen times, adjusting spark plug gap, clutch tension, recleaned the carb, greased my wheel bearings and just about any other moving component, I took the rebuilt motor from 18-20 mph back up to 24 at WOT. I can actually feel a huge difference in power between the two motors! My problem... Or ignorance... I see the motors guys build on YouTube that easily cruise at 35 and peak around 40, **** I've seen 70mph bikes... I just wanna do mid thirties, what am I missing? What all I've done: Port matched intake/exhaust Ngk spark plug Larger carb 36t sprocket Lubrication 97octane w/propper oil mix I'm sure there's other things I'm forgetting.. Just help a brother into the thirties!!