I think he meant to say the power bands for the cooler valves.
If you haven't changed the cooler valve oil in a while, they will get stuck and then the cooler valve power band will get stretched out because the cooler valve isn't turning. Even if you loosen the cooler valve it won't work right because the band has been over stretched.
I have heard that some guys will do some crazy stuff if they're in a rce and the cooler valve bands get stretched out.
First they pull the bike back onto the rear grab bar and take the pipes loose from the engine. There are a couple springs and a 10mm {usually} bolt that holds the pipe to the engine and the frame. Pop those loose and spray some carb cleaner directly into the cylinder. Some guys will also look at the sides of the pistons for scratches and I've heard of other guys using a mirror to look into the jug at the piston crown and head dome for pits or scratches. If there are pits or scratches, the power band has broken and you need a new top end. DO NOT ride it if it is pitted or scratched. If that's OK, they put the pipes back on. Usually only takes a couple minutes once you get used to doing it.
Then {and here's the crazy part} they open the radiator cap and smear some Preparation H on the inside of the radiator fill hole.
The guy I heard this from swears that if you don't use too much, the Prep H will tighten up the cooler valve power bands enough to finish a race. He said you squirt out about as much as it takes to go from the last knuckle on your middle finger to the end of your finger and then rub it in the hole not on the cap. His reasoning is that because the power bands are rubbery and constantly wet like a human intestine the Prep H gets in there and tightens it right up.
So to help you remember...
Flip her on her back
Expose the pipe
Look inside
If it's OK
Lube up your finger and rub it on the hole.
Shee should be ready to ride.