My LX's pegged out at 14.25" Hg in series. The ZX I don't know much about in series. 2 two stage motors in series never has been impressive overall, high lift, but CFM wise, meh. I need to see more solid info on them.Jim the lx in series is pulling 13"hg right?..being how much u prefer higher lift does the thought cross ur mind to use the ZX? Since in series they pull 18"hg?....less cfm than lx but I would think at ur 50' runs it wouldn't matter
A leading albeit lower overall lift single stage motor has proven to sustain high CFM'S regardless of the motor behind it that improves the lift number.
My LX's leading 122234-18 2 stages drop just 20 CFM at the machine, but gain an inch of lift. More importantly IMO they perform fantastic mid-range while cleaning. Building a system for awesome mid-range punch is the key.