On the rear cylinder, the bottom of the boot is leaking.......... If I spray carb cleaner or something similar on the top of the boot at the head side, it's only when the fluid gets to the bottom of the boot that the idle drops.
On the front cylinder, as soon as the fluid hits the head side of the boot, the idle drops.
If I spray on the carb side of either boot, there is no change in idle.
It's only leaking where the boots join to the heads, no leaks in the middle or carb sides of the boots.
I should add that these were brand new boots, not some second hand off eBay or anything.
Can you over tighten the clamps causing the rubber to crimp somewhere???? I can't imagine this being the case though because the clamps aren't exactly heavy duty and the rubber is quite thick and thight fitting.