I have an older RS that was inherited to me new in the box. It was probably purchased sometime in the 70's as that's when the Sierra manual that came with it was printed.
Anyhow... I mostly use this press for depriming and resizing duties. It has a slot in the front of the ram where the priming attachment fits. The primer catching tray is a pretty cheesy affair that kinds hugs the base. it usually catches about 1/3 of the spent primers, which usually go flying all over my loading room.
My grand daughter got a drink from the local QT the other day and the kids cup straw was one of those bendy flexible things.
When I saw it I knew I could use it somehow... I envisioned pushing it up into the slot and letting the primers dribble out.
What I found that worked was to cut about a 3" long piece the split away half the length. Now the primers just fall out the bottom into the catch tray. On occasion one will hang inside and fall out on the floor at the bottom of the stroke. ... Still much less than the old way.
My dog gives me the bird!