PBC help needed

[Mr_Toad]

okay i have a pbc horizontal reg the only problem is i cant lock it down for torneys. the adjustment knob has a grub screw to lock it down but the threads on the grub screw catch on the adjustment nob threads and it wont screw down enough to lock the reg properly.

so any ideas on how to over come this problem:confused:

can anyone suggest another adjustment knob that can replace the one that came with the PBC like one of the KAPP rock nobs:confused:

[Mr_Toad]

Okay cant get in contact with matrixcenter to order a new adjustment knob so does anyone know if i can order a adjustment knob from another LPR that would fit:confused:

cheers