I'm converting a Bachmann 45xx to P4 using Ultrascale wheels and the Bill Bedford Coupling and Connecting rod set. I would be very grateful for any details and advice from anyone that has done this conversion, on how to fit the rod to the slide bar crosshead, along with what items I could use to fit the coupling rods to the Ultrascale crankpins, as the conversion kit is designed to use the existing Bachmann items.