yeup still have drawing hear a photo of the test piece i made the top was cut to have groove to index the riser pipe i think was 2 inch aluminum pipe i dont remember it might have been Sch. 40 or 80 the piece i made for mine was out of .75 plate and made the index groove about .125 deep
sorry for the massive photo aging
it might be a little time before i could git to cutting out one or more
that little notch is necessary to clear the head of the bolt so if you plan on making one you will have to accout for that i was able to cheet a little by switching to socket head bolts ( Allen heads) instead of the factory bolts
i might be willing to provide the DXF to any one who wished to knock one out on there own CNC