I've not ever owned an air sprung fork, so I don't have any hands-on experience on them. I know you can easily lower them (decrease suspension travel) by sticking a spacer on the negative spring side. But how do the negative air spring work then? As I have understood, all but RS Dual Air forks have auto adjusting negative springs, so there must be a channel open between the main spring side and the negative spring side when the fork is fully extended to equalize the pressures on both sides. But this channel must close when the fork is compressed, right? So when the fork is lowered, how does this pressure equalizing channel work? Or am I way off with my explanations?