I have bent the **** out of my wal-mart mongoose rim . I have now put a aluminum quick release and remounted the sproket to this wheel. ive gone thru 2 back tires with about 800miles on my grubee 48cc. Where can i get a better wheel here in phoenix az? also when should i clean my mufffler and should i do any prevenetive maint. like clean carb and grease bearings thx Chill Will