Hey wrongway -

You need to mount those main gear with the axles at least as far forward as the leading edge of your wing. That'll be quite a bit ahead of the plane's recommended CG. Any farther back and you'll have problems with the plane tipping forward while taxiing, especially on a grass field. Very frustrating - I know from experience. On my taildragger Tiger2 I mounted the LG blocks ahead of the wing spar and leaned the gear forward so that the axles are located directly below the wing leading edge and it is very friendly on the ground while taking off, landing or taxiing.

Mike