Something to keep in mind
Most repair shops neither know nor care that just about everything in that stove which can break is still made or a safe modern equivalent is available.
The push buttons are a real challenge, but the rest should be no problem.
We had to replace the energy regulator in our 1974 GE recently. I went to the local parts shop and the young man (idiot) insisted on knowing the model. When he saw it was older than 10 years old, he insisted there were no parts available.
I pointed out that the energy regulator on the pegboard behind him worked just fine. He insisted it couldn't. I bought it, and he wrote on the receipt that it was not returnable.
Crazy. Parts online are your best bet.