I’ve noticed that when I make an adjustment via the zeroing wheel on my elevation the wheel moves about 0.15 mills up when I tighten the locking set screws, if I hold the wheel in place with an Allen key and then tighten the set screws this doesn’t happen, any ideas? Also when I dial up elevation there is a suction that pulls the knob back down to the locked position about 8 mills in it can be overridden by holding the knob up but it happens and is odd. Anybody else have this issue?