Rod cap mix-up

Ok, a continuing problem since I got the rod caps installed.

With just the main caps torqued down, the crank still spun fairly easy. The first set of rod caps on and torqued I didn't notice a difference. After the second it got a little tighter, but not much. However, after the third set... I couldn't turn the crank at all. All I did was pull the caps to inspect the bearings and they were re-installed in the same order (and direction thanks to FABO). What gives?