[Bibio]

personally i always thought that the rebound was the worst part of the stock forks. hence the pogo effect.

and here was me going to suggest welding up one of the rebound holes. ooohhh well you live and learn.

as to measuring the air gap just use a chopstick or something with a lines marked on it, dip stick in fork and pull out then see how much you are over or under the marks. or go and take out you cars dipstick (if its long enough) and use that.