Magnum Roller Lifters

I bought Johnson High Lift slow leak down lifters for my Magnum with a .530 lift cam. Still have to finish putting the motor together so I'll see how it goes but they seem to be the good ones now days.
I'm guessing you bought Comp lifters.

How much spring (on the seat & on the nose) pressure are you running?
Running Hughes 1129 dual valve spring 145# @ installed height, 358#@ .550, 375#@ .600 lift I’m somewhere in between
How much spring (on the seat & on the nose) pressure are you running?