I actually don't think it had anything to do with it. originally it sounded like it was his gun. Advice is pretty standard on tricky repairs on parkers from the know ledge able people on this forum. Unless you know what you are doing, dont Do it yourself. Just because I can take down the engine on my lawnmower doesn't mean I am going to do it to the twin turbo in my truck.

Robert. Like you, I do a lot of my own gunsmithing that others would suggest leaving to a professional. This is the place for information on Parkers and many other vintage doubles. Many very knowledgeable people provide information freely in an attempt to help others. Mr. Dudley is one that frequently jumps to help and and has several instructional posts with detailed photos. Not a simple thing to do.

Hope you follow his advice: "Don't go anywhere...We are all here to help."

I would like to see your progress on this repair.