I was looking at my 1L20 manual and never noticed before that it had two bulletins in its back pouch.
050-0474-00 replacement of Q310, Q340, Q350 for 1L30 1L30 1L40 491
and
050-0348-00 replacement of RF oscillator tube for 1L20 serno 100-519 (the famous 7077 tube)
I couldn't find these with a quick search, is there a place I can dump the scans? There is no "product modification" category at w140.com
