Of course I will, as do we all It takes a villageTom Thatcher (mentioned in thanks in your post) is great with these engines but more importantly teaches as he works. Leif, I'll bet you know your engine far better than you did only a couple of months ago and could probably be of great help to the next guy. Pay it forward.
Since I bought the boat I added a fresh water rinse and flushed after every use. I’ll probably add a closed cooling system someday but until then the freshwater rinse does pretty good.I owned an A4 for about 10 years and considered switching to a closed loop anti freeze cooling system but decided to just flush the block with fresh water after every use. I added a tee and shut off valve to the salt water line and just gently flushed the block from the fresh water hose at the dock. Granted you need a slip for that. I never had any corrosion problems, but it was a bit of a nuisance.