I have acquired an older Condor SS with an Etac regulator and 4500Lbs. bottle that is short and fat. I'm not sure how the previous owner shot this as the bottle placement is in the way of the scope. I have replaced the valve and hat parts but still find speeds that are over 55ft./sec. different shot to shot. Thinking that the regulator is not functioning correctly (any other thoughts?) I am looking for a budget regulator that will accept the 4500 inlet pressure, my earlier valve assembly, and is offset for better shooting comfort. External pressure adjustment would be nice but not required. This Condor also has the early spin on threads - not the SpinLoc upgrade. I'm not opposed to installing the SpinLoc upgrade but I would like to see this Condor perform well before spending serious $ on additional upgrades. What are your thoughts?