VERY GOOD INFO there..
I feel your pain.. I'm the guy usually on the other end of that stick..
When I come to help a customer out w/ similar problems & they are at the end of their rope & suggest darn near everything you suggested, all I get is screaming & yelling..
WHY didn't the manuf. do this..??!! WHY didn't the manuf. do that..??!!
I just look at'm & say, "do you want it FIXED or NOT"?? Lol
Now, not "everything" you said is Gospel, so take it w/ a grain of salt.. it might seem that way to you & work perfectly fine for YOU.. but that doesn't make it the gospel truth. {right}..
Hope you get her all straightened out.. Happy Tractoring.. TPG