Suspension is a personal thing what works for you has every chance of not working for the next guy though he might be the same height and weight and in reality there are no rules,hence why when you read on the net about an owner going to suspension guru who set the bike up for �25 it's just silly.

I run two bikes with Ohlins and another with Wilbers but strangely enough I rather like the basic suspension on the XT and at a touch over 76kilos certainly do not need any different spacers in,it feels over sprung as it is,and in an ideal world could do with revalving,but for me it steered slow and hence why I dropped the forks through the yokes,Kev's spacers will sit the bike up and slow the steering unless you counter that.

I'd take the spacers out and keep them for your own R+D,buy an aftermarket set of fork springs and the experiment with different oil viscosities and amounts,with my Triumph Tiger I ended up with Ohlins fork springs went from 5wt to 15wt and increased capacity(because I ride two up on it a lot) but it's all down to trial and error and to get an exact set up you'll need one of these.

http://www.dirtbikebitz.com/motion-p...ce=GoogleBase1

Do not forget when doing a test you'll need to ride 30k's at least to really warm the fork oil up so you have some idea where you are.