If you scan these forums you'll see a long stretch of messages from me circa 2019 when I was working on my first MB6582 and struggling to get a full set of PICs programmed.
Much like everything else in life, once I figured out what I was doing, it was actually fairly easy and straight forward to get the build / programming process to work reliably.
In the meantime I've made countless sets of PICs for my other builds and for others here on the forums, so I can attest to the process I'll link to below... https://1drv.ms/w/s!AtmSvwylfFJaggnN1TtalEzGQK1C?e=uxNFRo
I'm actually using a much faster approach now, with fewer steps, but I don't know when I'll have time to document the differences...