that's not how it works.
Genes may be dominant or recessive but it is rare that a trait can be ascribed to a single gene or locus. And when a trait involves more than one gene then it gets very messy and there might be no clear answer.
Is the stinger a trait that can be traced back to one single gene or locus? I doubt it, but I am open to the arguments to the opposite effect. Educate me.
I don't know much about crossing, but I would think if you select for the stinger in subsequent generations you could preserve it. The only question is if you lose the other qualities you want as you do that.
I'm sure I'll be corrected shortly if I'm wrong.
@POTAWIE used to have a theory that stingers were possibly caused by some trait where the flower ring sticks to the pepper in early growth stages and deforms the pepper. Always made sense to me though I have no idea if its been proven or disproven.
So I ordered a pack of "Trinidad Scorpion Butch Strain" seeds, and I am wondering if these are the same as the Trinidad Scorpion Butch T's???? Here is the link to the ones I purchased...
Maybe cross it with something better than a Reaper. Go back further. Then again, I have never seen a consistent story to the Reaper parentage so maybe just stick to some good ol' Scorpions!