Thanks again, DRTBYK, that did the trick. Quite a bit more work to stitch together more JPEGs, but much better quality and smaller file size (even lossless) when splitting them up.
Current: 93 R100GS, 03 XR650R
Prior: 73 CB350, 77 R100/7, 83 R100RT, 04 XR650L
I love every motorcycle I've owned and even some that I haven't.