Change your bail-out key to the '+' key on the number pad.
Re-map the '-' and '=' key to control your RPM and then you have no problems.
As far as I've noticed this has no negative effect as far as unmapped keys goes.
I would like to see it made harder to bail out.
You shouldn't be able to bail out of an aircraft that is locked-up and diving at over 400 MPH.
It should also take a lot longer to get out if you're in a vicious spin or perhaps even impossible depending on the g-forces invovled.