Solid Rollers on a Hydraulic Grind Cam

could you gut the hydros and put in a spacer under the circlip to make it a solid? would have to be pretty accurate..if you or your bro were a machinist. I had a few solids that had a circlip. didnt know why they had it as I have had others that were 1 piece.
My experience with the link bar lifters...hughes retro anyway...is that the rivet for the link bar is in the way and stops removal of the lifter guts. I was gonna make a setup lifter out of one but couldn't get it apart without destroying the rivet.