anyway to recalibrate a greddy mech. boost gauge?
 

Real funny story I think. Got my Greddy Boost Gauge today at an awesome price. Friend was handing it to me after looking at it and a skip of a heart beat later it dropped putting it at ~.28bar.

I was just wondering if there was away to adjust it, or for that matter take the boost gauge apart. It's a 60mm Greddy Mechanical Boost Gauge.

Weapingly,
Steven