"what is your problem. Set the gun up so you can smash targets and then stop fooling with the adjustments."
IMHO, an adjustable comb is an accessory used to get the gun fit/obtain the POI desired and then left alone; not adjusted any time a shooter has a "bad day" etc.
My question related more to, once it is set, properly, locked down as per the instructions and left alone, does it stay put where it was set or move after a lot of shooting?