I just bought the kit for an 8 series unit that I'm working on. What is the problem that you've got that requires the spring? Mine is slow lowering speeds.

I'd be interested in the bulletin just to see what it's about. I'm not looking forward to pulling the valve apart. Does the whole valve assembly need to be pulled out or can it be done in the unit?

If you can find the approximate date the bulletin was sent out or a form number, I may be able to get it from my sources.