Botched Re-jet for high altitudes?

[Mark Reckinger]

Hello,

My son, who’s living out in Longmont, CO, just had “Rocky Mountain Kawasaki” rejet his 94 GPz for its new altitude (was a Minnesota bike). He’s now reporting that his low end power is nearly gone…plenty of high RPM punch though. The bikes not really ride-able in this state. It had a mild ignition advancer installed long ago, doubt that this is a factor. More likely the dealer botched it. Does anyone have the jetting recipe for this bike at these altitudes? 

Thanks in Advance!
Mark R