re: harken track
... I put the same car on the C27 because it worked so well on my Nacra catamaran. The problem with the garhauer system is that the control blocks are mounted on the track, and that limits the outboard reach of the car. It's also an expensive part. Because of the limited cockpit space, try to find a system that allows the car its maximum range. Mount the blocks directly to the coaming rather than the track. Regarding the harken track... Yes, you have to drill a few holes. Not a big deal. Remember, the track is bolted through the wood base AND the deck. Take the opportunity to refinish the base while you have it off. You'll also have to trim the track with a hack saw to insure a perfect fit. Any changes you make will require removal of the existing track. Do not make your decision based on the reluctance to drill a few holes. The chances are that the replacement track, no matter what brand, will require some kind of drilling and cutting for the proper fit. Do not be afraid of this project. It is much easier than it sounds. With the lazarette hatch open, you have easy access to both sides of the bolts. Use appropriate fender washers for backing. If you want to fill the old holes with plugs or filler that is fine, but I didn't. Use 3m 101 or bedding compound, don't use 5200 or 4200. I used the low profile track, but the regular heighth may work a little better to keep the control lines out of the way of the car. I have thought of making some changes like putting exit blocks flush with the coaming to allow the car to move a little further outboard. If price is no object I highly recommend investing in a windward sheeting traveller car. Very, very cool. Check the catalogues. The small one will work for the C27. It's like $250. That car with flush blocks would give you a pretty efficient system. The traveller is my primary mainsail adjustment and it needs to work well under load. That is my main consideration in choosing the car.