I agree that your shimming will alter/correct the angle maybe easier than the 'correct' way. More than one way to achieve the same result.
Nothing you posted to this thread is inaccurate, but does deviate from the 'official' method.
So what! Independent thinking is something I admire! Just make sure it is thinking!;)
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
This Video shows the five cut method of checking squareness.
Bruce
I didn't know what a Shopsmith was...
Three days later I owned one...
One week later I was rebuilding one...
Four months later I owned two....
Ok Ok, I'm up to four now...