Our CC is 99% spot on. It consistently slopes just a bit towards the front, which will allow some water in the shower to stand, as the drain is towards the rear of the coach. I also find that condensation on the cap, is more likely to flow down the windshield too.
If parking for longer periods of time, I'll adjust the front up manually just a tad. And maybe then once every 7 days after that, I'll turn the system back on and react level, and again tweak the front up a bit higher, due to settling and I assume air bag loss of air.
I use the Gravitometer APP. Easy to use, and I find it accurate. I have two locations I place this: 1) On the kitchen counter, as it is easy to do quickly while the coach is sometimes working hard to level; 2) On the tile floor, also in the kitchen and right in the middle of the coach front to back and left to right.
It's never been enough of a problem for me to have it slight re-calibrated. If I ever did, I'd probably purposely ask them to level it just a tad towards the rear, front higher, to help reduce condensation running down the windshield. (May even add the flexible rain gutter when we get our cap painted next time.)
Best to all,
Roo II is our 04 Country Coach Allure 40'
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