Hello all - need some advice. I recently had an Aprilaire 700 installed to protect my guitar collection. To keep them happy, I need to keep the RH between 45-50%. The issue I have is that the humidistat control included with the 700 maxes out at 45%, and unfortunately I've only been able to coax about 40-41% out of the system. Is there a good substitute humidistat that gives me control up to about 55%? I'd even consider a commercial unit if someone was aware of one.