Updates, they know who did it. But cannot find him. Apparently, hes been rebadging VIN numbers on bikes with clean ones that he has titles with. That means that eventually my bike will be on sale on CL somewhere. If hes going to go as far as marking the engine I don't know. that means that I when I find my bike, my VIN will not match on my frame. But it may still match on my engine. Aside from that, I have no way of saying its mine. His vin will be legal, his title will be original since he legit washes the ink off the old title and resells it.
If you have your engine number and your VIN number, just go see any bike that appears on Craigslist over the next month or 3 that matches your bike's description.
If you see your bike, call the cops immediately, and tell them when they arrive that this guy is in possession of a stolen bike, and your engine number is all the proof that you need.
Or, you could just tell the guy the history of what's happened to your bikes while parked on the street, and he will simply give you the bike back, and then call a hazmat team to clean him up.