Answering my own post again but it's not the first time I have talked to myself
It appears that the problem is that the floor on the slide room is bowed. The middle is arced upward making the forward edge of the glide strip point slightly downward. This can be seen when the slide is out because the mid point does not become as flush to the floor as the ends. The front edge of the strip is what is cutting into the carpet. I will attempt to get a photo but it is a small space under there.
I am wondering if it is possible to straighten it by extending it part way then blocking up both ends and having all 265lbs of me stand in the middle. After that be more careful to balance the load in the attached storage bays underneath.