I've got my CG about where you're talking about and it doesn't drop the tail during level flight, but it does when coming in slowly for the landing. In fact, it's almost tough NOT to have the tail wheel (Sullivan ) touch first. It flies great there, but I may juggle my battery forward just a touch to see the difference. I was shooting for about 6" after reading those 1000 threads you mentioned, but ended up a little further back.

Oh, I cut the bottom of the fuse to mount my pull-pull servo for the rudder. If you target the hatch just right (between the formers), you may still be able to "adjust a little to fine tune it after installation. It does get tight back there. Even with the elevator servos and wires, it's close back there once you peak inside.

-s