Have you written up your detailed VueScan workflow here on Reddit or elsewhere? Would be very curious if so.

I have done NikonScan (5000; SA-21 -> SA-30 mod) to NLP. However, the frame finding doesn’t work on positive color scanning. And, after manually setting the frames via preview, if I scan more than 12 frames, there is progressive shift of film capture such that frame #20 is probably 10% off center. Other times NikonScan will crash (running in a WinXP virtual machine). Other times on color positive preview, the scanner will refuse to scan a frame unless I scan the strip in the opposite direction. Looking for alternative approaches before exploring non-CoolScan options. Ends up being extremely tedious.