Dan, I am moving it forward only 5/8" so I think it should be OK.

Other mods.
Use 1" triangle instead of 3/4" for the bottom rear fuselage. I can carve more away to improve the fuse shape and 1" is what I have on hand.
I want to make a MK.I version so I am going to shorten the nose 1-1/4"
I will make both the top and the bottom cowl areas removable.
Going to put in retracts the retract outwards.
I am going to have to decide soon if I want to add flaps.

I have the wing ribs cut out and all the parts for the tail cut out, so all I have to do is cut out the fuselage formers and sides and my "kit" will be done.

J