I will check those best i can for coil bind and p-v, but thought if i set them up at 1.900 as they are spec'd by Pac, the pressures would be very close or close enough. I'm not removing the heads. I called Howards yesterday about the Pac 1200 and 1300 series springs and Eric tells me they never seen the 1300 spring last any longer than the 1200. He also said the 1200 is plenty for what i'm doing as some on he have said as well. Thanks guys