All man I'm sorry to hear that neutronbomb
That really suck's!! I found a handlebar mount alarm system that work's on motorcycles and look's like it would work great on Motorized Bike's. I'll get the info and link and post it. Do you have a pic of your bike? If you do post it, with anyluck somebody might see it. I used a electric pencil and scribed my bicycle serial number onto my motor that way if the motor ever got seperated from the bike I could ID it if it came up for sell somewhere. Keep a eye on e-bay and local newspaper and craigslist, also keep checking local police auctions, it might turn up. I also always register my bicycle with the National Bike registry.