ShingoBlade- So far I haven't had any trouble in terms of adjusting the perches. You're supposed to loosen the hex bolts before you adjust them. If they're frozen, give them a good coat of WD-40, let it marinate and see if it breaks loose. The dirt in the threads can break up the smoothness of the perch adjustment. Every time you do plan on adjusting it, wipe off as much dirt as you can. It may be a bad sign if you can adjust your perches without having to loosen the hex bolt. You may be grinding the threads or the hex bolt wasn't stiff enough. What I use is a hex wrench key set that folds out like a swiss army knife, gives me more torque to break the hex bolt loose.