I had just finished the canopy on my RV-6 when someone shut the canopy with the handle turned the wrong way and it took a chip out of the bow over the windshield. I looked on the forums for a fix and the only one I found had you file down the outside handle but mine looked like it would still hit even with that. Below is a link to fix I designed to prevent this from happening.
http://ptcaviation.com/wordpress/?page_id=116
http://ptcaviation.com/wordpress/?page_id=116