Distributor cap question

[Jeepwm69]

When I ran new looming on the underhood wires, I took the distributor cap off to give me room to work. I'm wondering if I didn't get it back on exactly straight. The truck runs ok, but tends to bog a little more easily in higher gears than I'm used to. On my Jeeps there is a clamp that holds the distributor in place and one rotates the distributor to change timing. The cap is keyed so it will only go on exactly straight.

I had trouble getting the cap in place where all the retaining clips would hold it down on this truck. Could I have possibly not gotten it quite lined up and thrown the timing off a hair?