I have a 1982 O-Day 17ft daysailer and my centerboard is extremely difficult to lower, but even harder to raise. I had to dive under it last time to manually push it back into the trunk. I am looking for a schematic of it to see how to get to the pin it pivots on to see if something is jammed or needs replacing. Any help would be appreciated. Either post it or email me directly at pwenger@optonline.net