I recently built a rotcast table this is the first time I have used it I got great coverage every where but is one section any suggestion on how to correct this
copy that, its got to have a gear setup.From what I see in the video, you have uneven rotation. Both axis are turned by hand and not very smoothly. Resin needs smooth and consistent turning to coat evenly.
If you add some gears to the axles, you could better coverage, and an electric motor would complete the job.
youtube has a few examples.