GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
I purchased a head off Ebay that was advertised as an AQ151 head. Turns out, after I had it machined and rebuilt, it's off an AQ125. I'm wondering if they are interchangeable, and if so, what sort of horsepower loss I'm looking at.