Still no new data, but I reprocessed it just for giggles in DSS and then applied Marco Lorenzi's H-a combine, which seems to be the best solution for H-a with an OSC.
Yes, it is EXTREMELLY data deficient (2 hrs RGB, 2 hrs H-a, all done with the STF-8300C OSC and an 85mm scope), so ignore the noise.
https://www.astrobin.com/full/337690/D/