yeah if you run a softer spring i'd agree that 1.3mm hole with thinner oil would work. In general though i always setup my car with 2 hole pistons front and rear. i'm personally not a fan of running soft setups on high grip tracks though. For example at the nationals about two years ago i ran hardest xray springs front and rear on the nt1, but everyone else ran dark blues (softer than stock i think this is). I tried the softer setup and it felt really hard to drive to me. With the hard springs, my times were in line with Chris H from Kelletts, and getting quicker as the heats progressed. I think setup is a personal preference sometimes.

cross fingers the diff gear issue Dan had was isolated!!![/QUOTE]

Just make sure you have plenty of spare diff gears man!!!