I have a 135 genny on Harken roller furling which works very nicely. On club race day I switch to a 155. The 155 overpowers the boat at any wind above 10 mph. So when I race it above 10, we still try to keep the boat flat by positioning crew, using the adjustable backstay to bend the mast, and let out the main and jib when we get hit by a gust. I have had both the best days and the worst days with the 155. The previous owner purchased both these sails and put appropriate blocks and a track for the 135. The 155 block is mounted on a small metal plate with seversl holes for little adjustments that connects further back than any of the other tracks. Adding a track for the 135 should not be difficult. If you really want to go to the 155, it can be done. email me at bleathen@aol.com and I will send you some photos.
