42RH / A-500 in a Duster with pictures.

So there was a u shape machined into the bellhousing on my 42RH for the hall effect pickup that gets triggered by the old flexplate I dont intend to use. What did everybody do to theirs. I figure tight welding a piece will warp things a bit. What about filling it in with JB weld just to get rid of the cut out? What has everybody else done. I know JB in there wont have a bunch of strength. It was more for aesthetics to get rid of the cut out.