I got new PBGC estimates a few months ago. Can’t find them quickly but IIRC my payment would go up significantly if I waited until age 70. Not gonna do it that long but my idea was the same as yours about trying to delay a year or two and, as you put it, “Rotherize” for a year or two after I turn 65.

Denny

Edit. I think what you are looking at is a Social Security offset that kicks in at age 65 and reduces the benefit by a couple hundred bucks a month. If you delay taking it after 65 it should go up.