Spyder Compact Regulator Bottomline Kit

[viper46]

hi

any body know how to adjust this.

http://paintballgateway.com/kisprebokit.html

played with my 32 degrees xtreme, but even with the velocity adjuster screwed right out, was still hitting 300fps+.
have been told you can adjust this but how

Thanks

[DFSniper]

the little screw next to the gauge