Reporting in. Truck is still awesome. I should hit 100,000 miles in the next month or so.
Turns out plugs are scheduled for replacement at 45-50k. Since I've never done it I ordered in some ford plugs and got after it.
The oem plugs were at like .041. Recommended is .027 which is what I gapped them to. Much smoother idle.
Side note, the coil packs plugs have a plastic lock to keep them from coming loose and shutting the cylinder down.
On the first one slid the lock back and worked on the tab to release the second lock that would allow the plug to pull back.
That tab is designed to push not pull. I had more give in the pull direction and promptly broke the latch. It's very fragile.
I ended up putting super glue on the broken hoop and slipped it back into the connector where at least one of the two legs stuck. Maybe both.
I think the plug would stay in place without the latch but I didn't want to chance it.
So far so good but I've only driven 1/8 mile so far.