Thanks Scottly and grcamna2 - I've never had trouble removing the emulsion tubes and the ones on the bike all look unmolested (no dings, visual out of round, etc. A few of the spares look like like someone screwed in a screw to the bottom (where the main jet seats) to be able to pull them. Ham-fistedness...). Assuming the emulsion tubes are Keihin and as the main jets and needles are all Keihin, I don't think there would be an issue with the compatibility/fit of said parts. I'm sure points are good - just reset gap, timing, etc., but will degrease surfaces just to be sure. It was #1 that was colder, but I just started on #4 to check to see if the needles were Keihin or aftermarket.
I have new jets coming and new carb sync gauges, so I hope to try a sync and if that doesn't help maybe the jets + sync will.
In the meantime, I have a basement to dry out. We had a hail storm last night (Twin Cities, MN) with 3/4" hailstones and the occasional 1 to 1-1/4" stones. Gutters clogged from all the debris being knocked down and rain sheeted down the side of the house into 2 window wells that filled up. At 2:00 am woke up from the noise and went downstairs to check - from inside, the windows in the window wells looked like half full aquariums. The seals did their damndest, but the water seeped in and ran down the interior wall behind the sheetrock. I unclogged the gutter (that was fun), pulled the carpet before it got saturated and pulled the wet carpet pad out. Oh yeah, all that was with a flashlight b/c power was out.
. So, priority is to re-pad and re-stretch carpet when floor is dry. However, first world problems - I have a house, a great family, and there's food on the table. I count my blessings when so many are hurting right now...
Be well,
G