Pushrod length with stamped rockers on Magnum

It seems that postings are here are more for adjustable rockers. I have stamped steel on my 5.9 with reground cam and .028 head gasket. I have a checking pushrod but unfortunately it's a hair too long and puts slight pressure on the factory roller lifters. It does spin freely with slight resistance and the rockers torqued to 21 foot pounds. I tightened the adjustment until I could not spin the pushrod with my fingers. It measures (same as the stock) 6.9 inches.
Can I just add x amount to get my pushrod length? Shooting for .080 preload.