How to modified VSR HOP-UP lever

Because the VSR HOP-UP lever was unilateral force, so usually the right side of the dot will  bigger a bit, cause shooting but BB always go right...

STEP 1. Fill up the space with rubber or anything you can got.

STEP 2. Polished the lever like the photo, can try to adjust the HOP-UP check the dots is the same as large or not.
​If still a little bigger, continue to polish until both sides are averaged.