There are an amazing number of operating handles and lifting levers associated with Carmer hardware installations. I'm not near my data, but I think there were 21 operating handles and 22 lifting levers. From PRR applications I was able to determine the handle/lever combination that was used by the USRA composite gondolas, which were PRR class G24. IIRC, these cars used a combination that was not the same as the other USRA cars.

I would recommend the HO scale Yarmouth Model Works etched metal sets as a robust detail part for your work. I have soldered these parts to an 0.020-inch brass or phosphor bronze wire to install on an end sill. There are some bends to make so the parts could operate without hitting an end sill grab or the brake hardware. I can't recall prototype photo locations at the moment.

I hope this helps.

Eric Hansmann

El Paso, TX