Just making a repro part announcement. We began making repro MRS' in mid-2019 - but only announced on the RFM forum (they are handmade and didn't want to get overwhelmed with orders). We've been branching out more to other pin clubs that utilize this crazy unobtanium switch....the MRS stands for Magnetic Reed Switch - and they are also found in SC, CV, NBAFB, NGG, SWEP1 and CC ...they went unobtanium half a dozen years ago or so - so my partner and I at M&M Creations decided to remake them. Our MRS is plug/play - it is lighter, thinner and more sensitive (which we've found is key when playfields have clear-coats applied!) than the original MRS. You can see a pic of the repro MRS solo and in a lineup with an original Williams MRS, a Sega MRS (used in Maverick, Space Jam and SWT) and a repro M&M Creations MRS.
Further, we designed an MRS mod for CFTBL (see pic) to be placed in the whirlpool to garner more revolutions instead of that silly Cherry switch getting whacked by the ball. PM if interested!
Matt & Dan