Hi Peter. Wow, what a dramatic start for your first post on IIS
All the best for a speedy and full recovery!
Planetary work loves focal length
I usually image planetary at around 7m focal length with my 11" scope.
Perhaps your infocus problem with the 2x 2" barlow can be rectified by using a 1-1/4" 3x barlow. It will give you more focal length and being of the smaller variety it should reduce the distance in the focal train.