Hi Mike,
Yes, you're right. Some hardware store probably would have something close enough, but I make one faster than find a suitable in a store.
After all, all the tools by name here are for modern cars, no such thing as adjusting tool for drum brakes known if you ask on the counter.
I already made the tool and adjusted the brakes, thanks to you kind folks.
The information was the optimal angle and the lenght of "the tongue" (roughly 2" is close enough)
The issue was also, I could not bleed the air out of the pipes before the shoes were close to the drums.
Even if the main cylinder was good & tight and the reservoir was full of fluid, the pedal just went limp to the floor no matter how long you pumped it.
When I adjusted the shoe gap, the fluid went down to the pipes and air started to come out from the bleeder screws...
The brakes are now OK
Thanks,
Pekka