vic hubbard told me....

It is the open pressure that causes the problems ,not the seat pressure.Keep the open pressure to no more than 280 and use a quality break-in oil.Joe Gibbs and Brad Penn are 2 that I know of that are excellent.Be sure to use a good oil even after the break-in.

I agree with Monte. I always use Brad Penn during the break-ins and afterwards as well. Also, as Rumble said, you may want to double check your springs and make sure you are not mistaking a dampner for an inner spring. How about posting a close-up pic?