Ted Doskaris and I had a product made that used to be produced by Aristo-Craft and then Train-li. It’s a frog Insert that eliminates certain wheels from dropping into the deep frog throat. This product only applied to Aristo #6 switches. They are stainless steel and laser cut.
Asking $7 each plus USPS shipping, Accept PayPal, Venmo or ApplePay.