So far so good with my new Sportcity 250....but my horn button is missing!! I am betting that it got loosened by the tie-downs in the back of the truck

Not too freaked out - the horn still works if you press the where the button used to be.

You can only buy the entire left hand control assembly for $200. Ouch! Anyone know if any of the other piaggio / aprilia / vespa models may have one that works? (even with some modification). Preferably where you do not need to buy the entire assembly? I may go over to the dealer and see which models have similar buttons

Last resort will be to try and make one - it appears to be a mirror image of the ignition button. I may need to try and find someone with a 3d scanner/printer. Anyone here have access to one?