[Fred Taylor]

 I have a Canadian 6a7m Rodgers tube that has spray shield on it, now I can replace it with a 6a8g but have to add shield which I can do but is there a product that I can apply on the tube instead like original? These tubes a hard to find. The tube I really badly need is a 6f7m , if I cant find of those I will have to rewire tube socket for a 6b8 tube