Cheers for all the advice. The forks are a bit soft and bouncy, I've tried it with the correct amount of air in them and to be honest its not all that different.
Add to that the faff of trying to get the correct amount in there - have to unbolt the bars every time to get to the valves - and the fact that the air doesnt seem to stay in there for very long, and I think I'll just leave them as they are and learn to get used to it. Its never going to get ridden off road at any speed, and on the road the handling is good enough for the speed it travels at. It dives a bit under braking, but as the brakes are only adequate at best I dont really think its a problem.
I changed the fork seals after its long lay up, dont really want to have to do it again too soon.