JD, when you were spraying the cab with the painted surface being vertical, did you have any issues with paint "pooling" at the bottom?  I presume not, as you would probably apply a thin coat with every spray.  Just wondering if the painted surface should be horizontal.  I've never done cabinet spray .... but the day is coming that I will need to.

I have done all mine vertically like this. On this occasion I was going to do it like you say but Gavin suggested I paint all the same colour at once so both sides would have the stencil on and the side not being painted would be on the rocking horse and could potentially get damaged. Also, it is easier to line up the stencil with the side vertical so the top edge is lined up and stuck and then progressively stuck using the weight of the stencil to hold it away from the box.

Over to you.

J.d.