Greetings Wally,
parts shouldn't be that hard to come by, either ask round in this forum or check out German eBay. Quite often bikes are broken for spares, so it shouldn't be too hard to find bits unless you're looking for a starter (only new), starter-clutch (hardly ever one coming up) or a rear-down-pipe (yup, they're all f*cked). Everything else is pretty easy to get.
The brakes are the same as on other models, carb-stuff can be bought via
www.motorradbay.de (Keyster), batteries and other consumables can be bought, e.g. via wemoto (if you want to buy in the UK).
Hope this is of some use to you.
Cheers,
Greg