Sorry for the long delay in updating my findings, but thought I'd share what I found out. After many miles, many attempts at a cure, and just trying to ignore the pulling, I finally wore out the rear tire and replaced it. Replaced it with one that is the exact match for the front, and guess what????,,,,,,,the problem is almost completely eliminated!! It had shinkos front and back but the rear was the "sport touring" model, not the "touring" that I replaced it with to match the front
Now, in my own defense, before I get flamed for not having matching tires, (which I've been kicking myself for, trust me
), the tires were a gift from the PO, and I have had MANY bikes in the last 28 years. Being the lifelong El Cheapo Bastige that I am (I've owned and loved several KLRs, if you need more proof),, I have run mismatched tires many, many times before and never had a pulling to the side problem with them before,,,,,,,at least I never noticed it. I have new wheel bearings for the front, ready for the bmw tech at the local stealership to install when the front wheel comes off for a tire change again (bearings were checked several times and were good), so maybe that will cure it completely. Right now, the bike barely pulls to the right, and as mentioned by someone earlier, can be easily countered by a slight shift in riding position. Many thanks to all who have posted suggestions on possible fixes, as I've learned a lot from them all, and hopefully others will benefit from this knowledge if they encounter similar issues. Ride on