After digging deeper it was the TT rear bearing
this was installed by 928 motorsports. They smashed the seal in..so it made it 1500 miles before it failed. Previous owner paid for it...I get to fix it. Good news is I can clean and repair everything. Roger said the brake wire/sensors are NLA..so I’m wrapping them in Tech Flex...upgrading brake lines, etc....
I'm replacing the TOB for a belt and suspenders. The6 also installed the short shaft dry...supposed to have high pressure grease. So I’m just as well to have gone through it all.
Dan