Just went back over to the RV. Extended the slide again and noted that though there is what appears to be light contact at the front, there is a solid metal bent shape at the rear which holds the slide back about 1 inch from the outside wall. The distance from the back of the wood trim to the outside wall at front and rear are identical. Guess that's the way it is supposed to be.
I have done the three times in and out, holding the button for 10 sec after each, so think the slide is synced properly.
Thanks for all the prompt replies, which gave me reason to go back to the MH and re check and reset.