I just got a used Harken B500 winch-handle mechanical backstay tensioner that I plan to install this sseason. Its a beautiful piece of hardware. At a list price of $1134 I wouldn't have purchased it new, but I got a great deal on this one. Is anyone using one of these willing to provide comments on installation and use? Pleased with it? What about opening the 9/6" clevis pin holes to 5/8"? Which way is "up" on this thing? What about toggling it when installing? Thanks, jv