Thanks Chris. ?For what it's worth, I shifted the busbars for the lower manual after discovering this issue and that did not change anything.
For my own peace of mind, I went back and checked the A# as well as the other pre-sets on the lower manual. ?They were not affected, nor were the other drawbars on B. ?Everything I described in my previous post is accurate.
Could there be an issue with the pre-set panel in the back of the organ? ?Thanks again!