Hey guys so I recently got 13:1 SHS gears for my VFC VR 16. I had shimmed it and felt like it needed to be re-shimmed again after testing it. So I shimmed to the best of my abilities but it still makes a slight grind noise. I isolated the problem to the spur and sector gear. I decided to pull them out and see if they properly mesh, however I get resistance, like they get stuck due to the teeth not properly aligned on one of the gears. Has anyone had this problem? I tested the stock VFC gears and they do not have this issue, so I can only blame the SHS gears. Any help on this matter is much appreciated!