I have a completely stock China chick I ordered and built from Amazon and so far all has been well! I’ve got tank and a half of 16:1 through her already mixing Maxima pro scooter oil. What I’m wondering is right now what am I able to do easily to improve this engine/system to get a little more out of it? I bought a NGK iridium BPR6HIX because I saw a few other posts saying that may improve some things a little bit but I’m not sure. As of right now the top speed maxes out at about 26mph on a flat level surface. I have yet to put the new spark plug in there so just looking for any simple mods that may improve the low end or WOT of this engine without spending a whole lot of money. Thanks!