Well what are the numbers your getting. As long as they're with in a certain number of each other it should be alright. Unless the numbers are really low. You can start something with 100psi, may not run nice but engines will run that low.
I would expect to see on a 8.5-1 hs around 120-150psi a cylinder. Believe a buddy of mine tested his golf at about 130-140 range.
The real problems start when there's a large difference and balance is lost.