Hi Dana... Thanks so much for answering my question about the washers that are stuck!!
Now, is it absolutely necessary that I remove them and fit to the new circuit boards? I tried removing them, as I thought , as you have stated, that they were simply stuck due to age; however mine are stuck proper, and I fear I may damage the old circuit board if I pry too hard to remove them? Perhaps, IF it's absolutely necessary to have them installed on the new circuit board I could use fresh washers? For now I have just fitted the nuts etc without those washers... Thanks again!