Great work Gordon. Pleasing to see some colour images from you at last, be in mapped compared to conventional RGB. You've obviously got your imaging train woes resolved. The balance between the emissions lines looks aesthetic, though for the quantity of data you've got, it does appear rather noisy and processing looks black clipped. I would have expected a better result. Perhaps there is more data hiding there. Don't be afraid to go 20min or 30min subs with narrowband filters. You've got a mount that will handle it at least. Geez, with the short FL of the TMB115 and protrack it'll probably go 45min unguided and still deliver round stars.
To put you on the one of the many paths in narrowband processing, I recommend you watch the video "The Basics of Clipping Masks
" by Ken Crawford. Clipping Masks provides incredible flexibility in balancing the emission lines. Of course, there are other ways you can handle the task. Look forward to seeing more.