measure the diameter of ball ends, stock is a little less than 5/16" , if the ball end is bigger it will not sit as deep and act longer, again check lifter preload, and get more lube on the cam
went to Napa and looked some stuff up and found ( no surprise) they list the non oiling with the ball ends like the newer ones( the four different on each side) i have. they list all same lengths/sizes and part numbers for the 68/318 74/318 and 85/360 i have so i will look at all i have and make up the best matching set of non oiling push rods that i can.