If the hydraulic lifter is starting to give it up, the higher spring pressure could make it worse. A lot of speculation, you'll just need to go out and drop the hammer to see if the springs helped out or not. IMO, you made a logical choice in increased spring pressure. I don't know how it will turn out, but you will learn something.
Exactly.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads