What pressure is too much 20 or 30psi measured at the block? I can adjust the pickup to get it optimal but what is optimal?

Been chasing this problem around this yr myself. At 25psi, measured at the block, my WP hose's swell up a good amount and the supply hoses get rock hard. I'm shooting for 15- 20 at WOT

15-20psi at WOT is perfect.

10-15 is what I shoot for with 20 being maxium @ WOT.

Thanks, I will shoot for 20, I am definately low now but will find out tomorrow how low I really am and increase till it is right.