Check to see if your trracer has one of those adjustable bolts. I believe you can turn a screw on the inside of the face of the bolt. The screw acts like a choke and if you open it up, more air will flow through and increase velocity.
If you do not have an adjustable bolt, your only other option is to get a spring kit. Those cost about $10 and can be found on the Intrawebs. You need a Nelson-style spring kit.
Everybody: Let's ease up on the red loctite, 'kay? Thanks.