Just got my blocking filter from my 60mm scope back from Lunt. I had a problem with black spots on the blocking filter. It took patience, persistence, emails and a couple of telephone calls but they eventually replaced it. The scope is working beautifully.
You can read more about my adventure at
https://www.solarchatforum.com/viewt...hp?f=4&t=18594
Today's Sun.
RichardJ