I only used auto level once, just after we got the RV. It raised it almost to where all the wheels were off the ground and we nearly need climbing gear to reach the bottom step!
Ever since then, I've used the manual switches to get the minimum amount of extension of the jacks to achieve level. On my system, they work in pairs - left pair, right pair, back pair and front pair. It can sometimes take a couple of minutes to get level.
Frank Damp -Anacortes, WA,(DW- Eileen)
ex-pat Brits (1968) and now ex-RVers, as of 08 Dec 14.