The curved turnouts have really long frogs. I have a DCC friendly Walthers turnout, but it is not the current production. I also have a couple Atlas curved turnouts.
If I recall correctly, the Atlas wiring ring that connects to the frog does not take solder well and needs a brass screw to solder a feed to. Is the Walther the same non solderable ring?
Some of the longer Atlas frogs have a brass eye secured to the frog. These take solder very well. The shorter Atlas frogs, where the ‘eye’ is right alongside the frog itself, are Zamac or ‘pot-metal’ and do not. These benefit from tapping the eye and threading a brass screw into the eye so a wire can be soldered to the screw.
All my ‘Walthers’ turnouts are manufactured by Shinohara and I do not have any of their redesigned ones. I solder a feeder wire directly to one of the wing rails of the frog.
The redesigned Walthers turnout has a better arrangerment for wiring the frog similar to the Atlas ‘ring’ shown above. I can’t imagine they made it out of a material that is difficult to solder. It looks like it might be the same material as the rail itself.
The Atlas turnouts that have the cast (pot metal?) frog have a tab with a hole to accommodate attaching a wire. Tapping for a brass screw would certainly work.
In my experience, the frog will not accept a soldered joint, but I found that pushing a wire through the hole from the bottom, then bending the wire tip down and back through the top of the hole - the idea is to make a “knot” in the wire so it can’t be easily pulled out through the bottom of the hole. Then touch the knot with a bit of solder which fills any gaps. This makes a secure mechanical connection for the frog wire, and is less noticeable than the screw.
I have two of the new Walthers code 83 switches that I installed as a crossover. The frog power wire soldered easily to the provided tab. However when I tried to run through the crossover I found that out of the four pieces of rail that make up the frog only one was powered. I had to pull up the track and solder a wire to the other pieces of rail.
This in addition to the fact that when I opened the packages the pieces that are supposed to hold the points in position fell out onto the floor.
I bought the Atlas a year or so before Covid. I don’t remember buying the Walther but it probably came from Timonium, also also before Covid. It is labeled DC - DCC ready.