I haven't seen this posted as of yet, however, has anyone else encountered the larger bottle size to the new production Tung-Sol 12ax7's yet? I can say that I have and it blew me away. They are barely able to be squeezed into the typical Fender shield base....they will go, but they will scrape off the batch numbers screen printed on the bottles. It turned out that my supplier was unaware of the situation so he checked it out himself. Found that there is a difference from older batches and emailed Mike Mathews. Mike's response was that they had to go to the bigger bottle size in order to eliminate a production issue causing noise during the tube usage. I'm curious as to who else has had the same encounter.