So... As a follow up to my dilemma..
I ended up removing the pump and taking it apart to see if I could find any damage or anything that could be the culprit... I found nothing.. as a last resort.. I pulled the manual and read through everything, but it was pretty much useless...
I finally decided to call Shurflo's technical support line... the lady I spoke with told me there is an adjustment screw at the bottom center of the pump (3mm hex).. she said to turn it COUNTER-CLOCKWISE and it would likely solve the problem.. Well, I did just that, and it did solve the problem.. sorta....
It now shuts off.. but it's just not acting/sounding the same.. still not 100% sure why I needed to adjust something... when I asked her, she didn't have a real clear answer other than... things happen... which I get.. but I'd prefer to know WHAT happened..
Anyway.. my pump is turning off properly.. and I am feeling much better about things.. I think I'll continue to "tweak" things a bit.. but for now, crisis averted..
Thanks for all the help and suggestions...
Eric & Denise
2012 Itasca Sunstar 35F
2010 Harley-Davidson Ultra Limited