Steering Quadrant Replacement, Cal 2-29

Hey everyone! Well, while in the Caicos islands sailing close hauled I heard a loud snap and lost a lot of steerage. When I inspected the steerage I found that my giant aluminum steering quadrant had snapped in half. Not a common problem, turns out. I'm assuming it's the original quadrant, so 36 years of corrosion and abuse finally took its toll. We clamped the thing back together and drilled on aluminum plates to hold it together so we could make a passage to Dominican Republic, a place where we would be for a while and with more resources. Now's the time to fix it. The quadrant was made by Yacht Specialties, which went out of business decades ago. In my searching the only company I found which makes a similar product is Edson. Being that a new quadrant would take some time for them to manufacture and at quite a cost, I've been searching for used ones. The best one I've found is this http://www.marineconsignmentmaine.com/p-1260-edson-mangbronze-8-steering-quadrant-1-12-min-bore-iss2723.aspx If I measured my rudder post correctly it has a diameter of 2 1/4". Is this the same as other Cal 2-29s? The listing says 1 1/2 min bore. A lot of steering quadrants are listed with "min bore" measurements. Is this meaning that the owner is asked to bore it out further if needed? Or clamp it down less fully? Right now I'm hoping to order a used quadrant within the next few days so I can get it in time to leave here. My second idea is that there is plenty of welders here, and I could get it welded back together to last the next 3 months, before I put the boat away for the summer season where I'd have much more time to look for one. I'm looking to you all for advice, and asking if anyone has had experience with replacing a steering quadrant from Yacht Specialties. Any advice would be great. Measurements and pictures available upon request. Thanks! -steve S/V Dorothy Ann