Oversight.

Oh, tentative sigh of relief. My $200 oversight, once futzed and calculated, and computed, and stared at, and sweated over, and added a thousand times, and prayed, and fretted (can you do both at the same time ... probably CS Lewis would have an excerpt on faith to answer that), and steamed, and stewed. And erased. Now I have four pages afterwords to correct the balance on. Terriffic. But I think it might be fixed. And if not, I'll have to find out where the problem is later...