I have three options for you, Barnie. 1. I will send you a septum and 4 mounting screws at no charge. You would need do a little final fitting to assure the septum contour matches the cup, drill and countersink 4 holes in the cup and line drill and tap 4, #4-40 holes into the septum and then fasten them together per instructions I provide. 2. Remove and Send me your reverse unit, less the cable, and I will install the septum and return the unit to you at no charge. 3. I will send you a new unit with the septum and cable, less the lever assembly since yours is modified, and you will remove and return your unit to me.
The second and third options will cost you about $25 for the shipping your unit to me. I will obsorb the cost for return shipping. Just let me know you preference. Bill