Hi everyone- thank you for taking a look at this!

I am working on restoring this 1978 Heiwa machine - my first such project:
Heiwa front.jpg

Its jackpot assembly seems to be missing the rocker part with upside-down wings:
Heiwa back.jpg

When I say 'missing' I mean broken off:
Heiwa jackpot.jpg

I wanted to try to make the part by 3d printing it, but have not been able to find any stl files for similar parts. I understand that different models have slightly varied versions of it, but the basic shape seems to be a cross-over through brands and ages.

Any advice or lead to help me source this part would be absolutely awesome and I thank you in advance for it!