@Travis
Thanks Travis,
Yes, all figured out and back on the trail again. I stumbled accross https://www.powersportsnation.com/ while looking at ebay ads and found a good condition $40 master cylinder from them. It arrived in only two days. I disassembled it, cleaned it, reassembled it and installed it. Works like new again.
While in there I found my brake pedal return torsion spring was broken so ordered a new one off eBay that arrived today for installation tomorrow.
All good. Thanks for the follow up. Mike