Can't say enough good things about Garhauer. A machine screw loosened up on one of my line control genoa cars. I forgot to tighten it and it and the spacer took a holiday. Sent the car back to them and they replaced the marine screw and spacer and sent it back for no charge. Got a deal on a Ronstan double ended block set up for my boom. It's worked out fine and have reccomended it to others till I found out how good a deal I'd gotten. The same set up from Garhauer was one third what the chandleries were asking for the Ronstan set up and even cheaper compared to Harken. When I bought the genoa line control blocks had SS genoa track. Found out the genoa track was slightly thicker than the aluminum track that they were designed for and they bound up. Garhauer said send them back and they would machine to fit the stainless track which they did for no charge. Their products are reasonably priced and the after saie service can't be beat.