OK, figured out "my" problem. Since all slides are electric instead of 2 being hydraulic, it makes sense now. My wife and I usually check outside before we put in the slides. She goes to the back and puts the bedroom slide in and I do the 2 fronts. The last few times we were in sync with our preps and were trying to put the slides in at the same time. The last time It would not go in it occurred to me that there was just not enough current to be putting two slides at once. I waited until she was done and in it went with no problems. So yet another example of me causing my own problems. But I also learned something. Still not sure where the tank for the SMC leveling is. Can't get good enough pics up in there to give Karl so I will just wait until there is a real need to cross that particular bridge. Thanks for the help, as always yall's assistance is always appreciated.
Jerry