Tom---I treat these sets like my other insert sets. I store them in sheets behind my regular set for those years. I do not view them as part of the set ( nor do I view Traded or Update sets as PART of the regular set). But since my collecting parameters were all things listed for Topps in SCD prior to 1995, I had to have them
I think you could also get the 74s on uncut sheets as a send away redemption, which is why you can find some hand cut.
I also do variations for all my sets but rather than side by side, which if I picked up later variations would require shifting all my cards ( like my friend Steve ), I overlay them in a separate sheet