Unfortunately, I have never worked on the internals of any bike engine. However, I had a Pontiac once that was getting water into the engine oil. This is a deadly serious problem for the engine. Once I noticed the problem I started changing the oil twice as often as normal and she lasted about 6 months before the engine locked up tight. I hope your efforts solve the problem without having to get a new block. Good luck.
'07 VN900 Classic
Horsepower is an illusion.
Torque is the source of all good things.