My goodness, 20k (12,000) miles and you're just now cleaning and adjusting the chain? Not good. I assume when you said "dark water" you meant "gunk". I am sure there was lots of built up. I don't think you need to use a whole can of cleaner, just a good covering of cleaner, sometime to set it, and a rag. Good luck in the future.

Try to check the clean and check for adjustment every 500-1500 miles, depending on how dirty your bike is and whether you garage it. Clean and adjusted chain is important.

(If I misunderstood, I am sorry but my I am offering my best advice.)

You understood well I feel shame for it. Definitely I improve it and maintain now properly but still feel bad :/// my and only my fault...

It's on old resort in impeccable condition. The food is pretty good, the outside bar is fantastic as it allows you a great view of the river, in fact you're pretty much on top of the river just before it hits the dam, and the cabins are very large and deluxe. My buddy and I were able to have separate rooms but share a common porch where we smoked cigars, listened to jazz, drank whiskey, smoked a little hooch, and told stories to the wee hours. All the while our bikes were under a covered area in their paddock. It's a favorite spot of car clubs, so we saw a number of exotics rolling in. You're right on Rt 129, so the location is perfect. Doesn't get much better in my mind, at $200/night it's a bit pricey, but all in, I'm back there in a heartbeat.

Now that's what my dreams are made off. Fantastic!! I could live every weekend like that if my riding friends had the time.

It was a slow process and I had a holiday in italy and spain for a month in between. I found it difficult to depress the closer rockers so made a tool and while I was at it made a tool to seat the closer shims.
I only have a lathe to make the seating tool so the milling on the lathe is a bit average and being chrome moly the steel is on the hard side to machine.
The timing is so easy on our motors because the end of the cams have an upside down "T" slot all 4 cams at the same orientation when the horizontal cylinder is tdc on compression no need to mark belts with dots or count teeth.


The engine is quieter than before when it had huge opening rocker clearance.