Carbs were cleaned from a fellow concours owner whom I trust. What is wrong with carb cleaner?
Put new needle in #4 and no more dripping. But, have loss of power now. I get on the throttle and sluggish response. I'm such a novice here, I'm not sure what else to check. It does seem to have started after carb cleaning though. I do not think that there was enough flooding to cause the hydrolock I hope. What are the signs and symptoms of this?
Yes, there seems to be a slight oily residue in and around boot #3.
Like Mettler1 said: carb cleaner degenerates rubber parts like orings and CV diaphrams. Even if you completely disassemble carbs per the manual, there are orings in the butterfly shafts' ends which can't be removed as the shafts are pressed in so you have to be careful there.
You had the carb rack out to replace the float needle, so are ALL vacuum lines re-connected and boot clamps secured properly (particularly between carb and cylinder head)? Did you remove spark plug wires during this maintenance? Are they securely installed and to the right cylinders? Is the airbox cover back on? If these are SISF'd carbs - is the foam installed in one of the airbox snorkels as it should?
Is the oil on #3 boot between carb and airbox? Probably coming from the air box due to the crank case breather valve spitting up in there due to oil over fill. Look in airbox to see if oily on the bottom.
Sometimes it appears the carb bowl drain is the leak point but its really a carb bowl oring and the dripping only manifests at the bottom at the drain. Has caused some to over tighten their drain screws and crack bowl castings. Then they really leak!