Hello I've a couple of questions about the rear shock if anyone's up for it: Getting at the preload adjust rings seems to require removal of part of the exhaust? Or is there a special tool? More special than a pin spanner I mean. Access to the rings is obscured by the fuel pump and the exhaust, and the rear subframe really. And the rear wheel. Are there any aftermarket units that have the preload ring adjusters at the bottom, which would be a better solution? I can't find any. Thanks! Tim