[1crosscut]

I have a couple of Model A binder engines that I am starting to work on and need a bit of help with the Mallory distributor that is on one of them.
I have the spring clip removed that holds the upper plate in place but the plate is not wanting to budge. I'm thinking that it is just being held in place simply by crud and how long it has been since it was last removed. I have been soaking the outer edge with PB Blaster and lightly tapping with an aluminum hammer to introduce some vibration to get it freed up. Just wanted to check to see if there is anything else I am missing that would be preventing it from coming apart.

Also where would I look to find points and such for it?