A buddy and I both bought the 3100 a few months apart. His ran like a top from the get-go. Mine had to go back to the factory (after a local Champ service center "fixed" it,) for a new carb and control board. Now mine runs like a top too. Works well, but it will bog out if you try to use the microwave while the WH is on electric. But all in all, a good unit for the watts, price, and sound level.
2015 XLR Hyperlite 30HFS5 (mods being performed regularly)
2009 Salem LA 292fkds (gone)
Nights- ('12)23 ('13)23 ('14)15 ('15)31 ('16)25
2014 Harley Davidson FLHX (XLR cargo)
2014 VW Jetta TDI (diesel sipper, camping support vehicle)
2011 Ram 2500 CC 4X4 CTD, B&W Companion (toy hauler hauler)