Hobo, looks like i am having the oposite problem from you with my Sirius!

Got some proper fish scales and weighed my track pump on some kitchen scales which i know are accurate then weighed them on the fish scales and they were accurate. so up went my 3 bikes:

Bike               Calculated/claimed weight:              Weighed tonight at:

Sirius                         27.7lbs                                           26.5lbs

SS                              24.2lbs                                           24lbs

Carerra Gryphon        no idea                                           24lbs

Spec of the Sirius (large frame)

RS Rev U-Turn Air

DT Onyx hubs on WTB laserdisc XC rims

Juicy 7s

Schwalbe Nobby Ncs

LX HT2 chainset

xt rear mech

WTB/FSA finishing kit

The only thing bought to be light was the FSA KForce carbon riser bars, he rest was functional and cheap. Might try the Superstar Cabon post and a light saddle to lose another 1/2lb.

Not sure why your medium frame is coming out so heavy in comparison but it's still no World Cup DH bike in weight is it?