Join Date: Oct 2006
Location: Green Bay, Wisconsin, USA
Make: GL1500 SE
I bad the same problem with the manifold clamps not quite tight enough. I removed the clamps (no small effort) and then removed the screws and the spacer. Then I took off @ 2.0mm from the spacer. Smaller spacer lets the clamp tighten.
Concerning the ‘dead spot off idle’ ... yes it might have something to do with the RECALL but the recall description is best referred to as a hesitation.
Something I found before is 1 or more loose screws of the 6 screws that connect the lower air box to the carbs. That’ll cause an air leak like the ‘dead spot’ description.
Like Ray said. Another fix is to wrap the isolator with electrical tape about 4 times to increase the bite of the clamp. Or go all out and buy new isolators.
Worked on the "big rigs" for 45 years now just riding my Wing whenever I can. Gets cold in Wisconsin.