I am building an early 29 cabriolet and am deciding whether to put in a 7 tooth or 2 tooth stearing gear. My question involves the upper quadrant for the throttle and spark rods. If I decide to use a 2 tooth do I need to find one with a quadrant that will work with a 29 sterring wheel? Do I need to remove my 30 style closed quadrant and add a 29 open style quadrant? I have been able to remove the 29 open quadrant but have not been able to get the 30 off. Do I need to cut the column in half and weld the 29 top to a 30 bottom? What have others done? I have not yet gotten a steering wheel splined or keyed.