I recently purchased a Fabarm Axis RS12 unsingle trap. The comb adjustment is a little different than anything I have adjusted before. Typically, I have just used washers for the adjustment - and tightened it down. I understand how the adjustment are made and how the "locking" mechanism works to hold the position, but I guess my question is, has anybody had any issues with them loosening? I realize the comb can't fall off, but I am wondering if it might give or wiggle a little over time? Thanks in advance for the feedback!