when did the same yours is doing, i just squeezed the lever all the way back to the bars, put a wire tie around it and let it sit over night. bleeders closed and cap loose.worked like a charm.
here are some parts i have on ebay.if you want something make an offer. i need some money to redo my top end asap. http://cgi6.ebay.com/ebaymotors/ws/eBayISA...&sort=3&rows=50