What's your BEST modification or repair?

[APD]

There's been several mods over the years that we needed and have enjoyed. Shower remodel, water heater upgrade, storage mods, LEDs, awning replacement, etc, etc.
But I would have to say our very best overall was upgrading the axle from the OEM 2200# to 3500#. The old axle was nearly maxed out and bounced/bottomed constantly on the road. The newer axle has made towing so much easier and safer. Dexter axle was easy to deal with and made the whole thing go smoothly. They couldn't sell direct to me but they helped with ordering thru a local retailer and with info on the swap.

What's the best mod or repair y'all have completed and enjoyed?

[dustyone]

My DW and I sleep with c-pap and bi-pap machines. The best thing that helped us was converting to 2 6volt deep cycle batteries in series. We can dry camp for 2 days, even with moderate furnace use. Also I switched the lights to led. The camper is a 2011 210 wbs. The batteries are 6 years old and still working well.