This is a good post. I have always wondered how jams were done separate from the rest of the car. Ideally, it is best to paint the whole car but wow you gotta really be moving and have everything in order.

Typically how much surface is between the jam and the panel when you back tape? An inch or so, less? When you spray, to you just spray the jams and count on the over spray to fade in behind the back tape or do you actually spray into the back-taped edge?