HOW TO INCREASE THE AIR-SEALED ON KWA-AR GBBR
The bolt part :
Slightly increase the depth of nozzle into the rubber to increase the air sealed.
1. Slightly polished flat (both side), parallel to the putter.
(red circle in the pic)
(red circle in the pic)
2. Increase the depth above the putter.
3. After polished like the photo.
4. The measurement depth is about 3mm.
The barrel extension part :
Increase the smoothness of the putter when loading BB.
1. Use fine sandpaper to polish smooth. (Red arrows in the pic)
2. Use fine sandpaper to polish smooth. (both side)
4. Assemble all parts, done!!
