So you're down 1100 big blinds when you c/c flops with low pairs.

You're up 500 big blinds total with any action for low pairs. So if we assume that we can neglect donk leading (you prob don't do it that often), then all your actions are c/c, c/r and c/f.

so (c/c) + (c/r) + (c/f) = 500
(c/r)+(c/f) = 500+1100
so your winnings for either c/r or c/f are 1600 big blinds

So it could just be that you're winning a ton c/r and should be c/r more and not necessarily c/f more, if I'm thinking about this right.

It would be interesting to see you filter for the times you c/r with a set, and how much of those winnings come from showdown versus non-showdown. If you're winning a ton without showdown in that spot then it might be profitable to start c/r more non-sets even and using fold equity.