cheers, I need to set up the sag first but havent got round to it yet. Sounds like its probably right, I think the answer will be a heavier spring but with very little preload. To set it as is, I reckon I'll have to dial a way load more in!
Off to the Ring in less than two weeks, may take a couple of spanners for running adjustments!!
probably get it done properly when I come back, may have the front spings changed too