I had a Curare 20 as a tail dragger because of weight. I used Robart 600 retracts. I put the gear rails in the D tube ribs in front of the spar. It flew locked in and ground handled well. It sold well too. I wasn't even tired of it when I got an offer. The tires were a tad in front of the leading edge. Like half way if I remember. It was a long time ago.