Heli Parts
Sorry, forgot a part of the response.
Try Heliproz.com for parts and heli's. They all fly the products they sell, are great to answer questions and take the time with you to get it right. My experience is that they are rarely out of stock. Actually, I don't recall them having missed once in perhaps ten orders from them.
Subtle hint- you need a one way (Torgensen, I think it's called) start shaft for the Caliber to start the engine. It's a special start shaft that allows the heli engine to run faster than the starter once it's running. (why Kyosho did it this way is beyond me- It's one of a kind, I think.)
Bob