Change auto delete altitude of Kerbin

[Geonovast]

The auto delete altitude of Kerbin's, what, 20-25ish km?  I think that's too low.  I fly a lot of shuttles and I like to get what I can out of the ET before dumping it, so I tend to eject it around a PE of 50-60km.  Which means I have to ignore it (which I can't do), delete it manually (which I don't like to do), or watch it burn (which is fun but can get old, especially if the AP's pretty high.

So basically I would like a way to change the auto-delete altitude.  If this is a thing that already exists, I cannot find it.

Anyone happen to know if this is already a thing or if it's possible?