Wheels, carbon gear etc. is not going to change the behavior. If you wish to do that then you must change the landing gear geometry. You cannot work around the fact that your gear is to far forward. Now it is not neccessary to to move the gear back to the wing if you don,t wish to. Just cut a set of alummium flat gear that angles back as in an RV 4 and you can have the gear where it needs to be and on the fuse. Yet another even easier trick is to bolt or rivit a simple trailing link of alum plate to the gear for the axle. This was used by cessna for the C-140 when they screwed up and got the main gear to far back and in their case they extended the gear axle forward. I,ve used trailing or leading links on a number of models with alum gear that was not properly positioned very successfully.

John