I've had issues before where after transplant, my maters just stop growing completely. I'm generally of the mind that this happens when I plant them too small. I don't transplant seedlings unless they have true leaves, however sometimes I will plant a seedling with only two true leaves as I am just hopeful that way.
So I hit The Google. It usually only takes me about four minutes to find the dick-my-way-or-YOU-SUCK-AND-ALL-YOUR-PLANTS-WILL-DIE gardener. Never fails. Anyway, as I love OPD, here ya go! I'll add as I find.