Finally got around to looking for my "hard start when cold" problem. I was suspecting plugged enrichener circuits (not really a "choke" on the 1100.)
(Pulled the carbs to also check for a suspected coolant link and found the loose clamp on the right bank coolant elbow.)
Turns out, the link between the left bank (where the cable connects) and the right side is too "limp" to fully open #1 and #3 circuits. The link is a small diameter rod with two kinks in it;when it gets pulled, the kinks straighten just a bit rather than pulling the circuits open fully. I checked my shelf set and it does the same. Maybe Ma Honda didn't think bikes get started at temps below freezing.
Usually not a problem above 45° but when it's lower than that, the right bank won't fire 'til there's some heat in the system. Runs fine once warmed up.
I'm thinking a second cable from the right enrichener activator rod to an accessible location, just for those hard start occasions. Other (more involved) fix would be a more stiff link between the two sides.
Any other thoughts?