Ed, you may not be too late.  Mobile guy may have mis-diagnosed, but did do a range of testing.  Now we are here after 5 on Friday, figuring out our next step.   Lake Havasu City, Quartzsite or just go on to our next destination,  Phoenix, to find a repair shop. We're not mechanical;  maybe a 2001 Beaver was a bit more than we should have taken on.  Thank you for the support!