[Tuske427]

I've personally never had any trouble with coil springs like this. If you're concerned you could radius the top corner of the spring (removing a lot less material & minimal heat build up than grinding half the top coil flat) to eliminate the corner edge and any potential gouging. not that it would be moving much anyway... it's under a fair amount of pressure when compressed. The last thing you would want to do is build up too much heat and destroy the temper of the spring- then it would cease to be functional.

You could also call up a company like Eaton Detroit Spring and talk with their people to see if they say differently.

hope this helps