Hello Leejohn and welcome to our site.
Yes you have probably the most common ailment of these bikes, the electric starting problem. I am familiar with stud removal but it is always helpful to see how others deal with the problem because as you say the method you use varies with the type of break.
I look forward to seeing pics of your old girl. You won’t be judged on it’s condition but whichever way you decide to go i’m sure you will get advice. Please add the pictures to this post and not your profile as no one will know they are there.
I will check what gaskets I have. You can usually get them off ebay singularly but in my opinion it’s far more economical to buy a full set at the right price.