Nev-r-lube axles on my Alpenlite

According to Dexter my nev-r-lube bearings were good for 100.000 miles or 5 years but with around 30.000 miles and 5 years one failed totalling everything from the spindle out ($3.000 worth of damage) and Dexter through it total incompetence in shipping stranded us in Griffin GA. for 6 days waiting for parts and we'd probably still be there had I not raised hell with them on the phone!! The mechanic who did the repair said the other three were fine but as soon as I got home I replaced the other three bearings and will replace them again in four more years as I have zero faith in them. Frau Blücher and I only travel from Ontario to Florida twice year which is way more than you BUT,,,,as Murphy's law dictates "If anything can go wrong, it will" and I don't know what it's like on the stretch of road that takes you to and from your campground but I'll never be stuck on the side of I-75 outside if Atlanta with trucks doing 75+MPH three feet from my port side due to those bearings again! Replacing them is relatively simple, you can buy them direct from Dexter and my mechanic where I live came out to my rig and replaced them on site for $150 and a couple of cold beers, very cheap insurance as I see it.