Re: what did you do to your motorized bicycle today?
Today I replaced the stock 'spoke sandwich' sprocket with an adapter & 44t sprocket from King's - VERY NICE! Those folks stamp their company name on their parts, which are a joy to behold compared to the stuff that comes with the kit. Fit perfectly, and if your hub measures .988" the one inch adapter is just what you want - no shims necessary.
Along with the angled manifold & NT carburetor I added a couple of days ago, my 4 stroke Micargi is beginning to feel less like a project and more like a ride.