The hinges are available from Joe Thoen at Trillium
/ Outback in Calgary. Since you don't have the original hinges on your door, my fix for the door might not work for you. But I found that stuffing as much resin impregnated fibreglass mat in the screw holes, as possible, helps give the new screws something to hold onto. Lining up new hinges is something I have never done. I have just used the door itself to line them up. This may still be an option for you, if the original hinge holes are in the door. After the trailer side of the holes for the hinges are filled, and the hinges are installed on the door, tape the door in place, where it looks right, with the same gap all the way around. This took me three tries. Then use the hinges as a guide to drill the trailer side holes. The screws I put in the trailer side are 1.5" long. Then put more resin and glass in the holes, then put the screws in, (before the resin gels). After the resin hardens, (about two hours later) make sure the door opens smoothly. Then one by one, pull the screws out of the door side and put resin and glass in each of the door side holes and install the screws.