Aligned door hinges to have rotational axis pass through both hinge pivot points and bent theall 4 hinge pieces untilthey were aligned perfectly. Drilled the 4 holes for the bracket which is bolted to the cabinand finally marked, drilled and reamed to holes for the pivot bolts. Assembled everyhing and checked door opening and closing when sitting inside Helicycle. Hinges work very well without y binding and the 3 door latches can be closed easily and opened with one hand.