I have an old Ranalah English wheel which I’m trying to get back into service. The threaded rod for the lower anvil adjuster binds and is unusable. I removed it with great difficulty and measured the thread as 5/8-11 SAE. This is an English machine made during the 1930s so I’m guessing it should take a British Standard Whitworth thread. Again I’m guessing someone must have replaced the rod for some reason and used an incorrect rod. I purchased a 5/8-11 BSW die and threaded a new 5/8 inch rod and while it fits better, it eventually binds. Maybe the threads in the hole got buggered up? Should I get a 5/8-11 BSW tap and clean out the hole? Any thoughts? Thank you!