I got the 550 back from the shop and spent close to $900. I feel liike I really cheated by bringing the bike to a shop, but I never would have figured out that the bike had the wrong carbs on it, etc. Lucien at AL and L rebuilt the whole front brake, found a set of 77 550 carbs and rebuilt them, installed slick chrome pods, adjusted the timing chain and points, installed a brand new choke among other things.
I got the bike home on Dec. 30, flushed the tank and after some battery charging got the bike running. Only took 15 months to get there - minus eight months of being separated and living out of my bike while my wife went through a midlife crisis.
Will post pix this weekend.