Don,

Yes, I do think they have there value in the kit building process only because I can focus my efforts elsewhere on the project. I modify the hatches slightly by adding hard maple in place of the blocks cutout of the ply for the servo hold-downs. Also, I use small piece of backing plate where the 8 - 2-sets of screws hold down the hatch. This just gives the screw more stock to hold down into. If they were any more, I would probably make my own hatches, but couldn't make as fancy of a hatch used here. Go for it!