Kato F7 Coupler Conversion Revisited

Back in December I did a series of posts about replacing the Rapido couplers on my old Kato F7 locomotives. I have an "A" and a "B" unit. Replaced the couplers in the "A" unit. But boy did the front of that loco give me a hard time. Still haven't done the "B" unit. Here's Part 1: Kato F7 Coupler Conversion Part 1. And Part two: Kato F7 Coupler Conversion Part 2. I also posted a series on the N Scale Forum on TrainBoard.com. This seemed to provoke a lively discussion about which coupler was best for what generation for what unit(!) This original thread Kato F7 Coupler Conversion thread has never really died yet. 3 months later. Now my friend John Sing, N Scaler Extrordinaire, has made an exhaustive study for this conversion and posted it on trainboard. Click this link to view his findings: atsf_arizona's Kato F Unit Coupler Research. No wonder my conversion went the way it did! Thanx, John! Also here's a link to John's personal ATSF pages, featuring his NScale RailRoad! Check it out! atsf_arizona's Pages