Your newer WFCO should be fine. The one in our 2007 Roo was still working great after 10 years of usage, when we sold it.
As far as I know, all WFCO converters since at least 2007, are 3 stage.
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Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
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