Make the final valve spring decision first. If you end out with true dual springs, then you'll have no choice but to turn down the guide OD and use Viton seals.
FWIW, i've always thought the length of the umbrella is just to make sure they extend below the top of the guide when they ride up on the stems.
Yea that is what I am researching right now! You read my mind lol I am doing alot of reading and studying about springs I plan on starting a new thread on the topic but I am reading up first so I kinda know what I'm talking about.
What I gather so far. Is the bind height is the max effective lift. So for example if my installed height is 1.65 the bind height is 1.1 the max effective lift for those springs will be .550 then you have the spring rate I'm still researching that
