I have to agree with Mike. I have converted many a plane to tail dragger's and had the best luck putting the landing gear even with the leading edge of the plane. This puts the gear in front of the CG by more than 1". Usually around 3+ " on a 40 size plane. This makes the plane taxi very easily without the fear of it tipping on it nose. After you move the gear to the leading edge of the wing you must make sure your CG has not changed. If it has add a little weight to where you need to to bring the CG back to its balancing point. Good Luck