Hey Gang, It's been a while. Sometimes your job doesn't realize that you have a hobby!! I have a Robyn 520 on the bench that had no transmit. I checked C179 and it was bad so I replaced it with a 25 volt version. The radio now transmits about 1/4 watt. The good thing, it transmits. The bad thing, probably need a final and possibly a driver. As the 1306 and 1307's are almost unavailable what are you using in replacement for them? This radio will be set back to stock 4/12 watts so I am not worried about needing to drive the heck out of it. I have read on here that the 2166 and the 1969's may work. If that is the case what bias would you set them to? On a side note I did buy 5-1306's and 5-1307's from a US E Bay seller. I did question them about the fake parts thing and they assured me that they were real. Well, that was not the case. The writing on them was bad and I even tested them in my personal President Washington (1st edition) and none of them worked. Of course. Oh well. On to a different solution with your help. Thanks as always!!!!