boys and girls.. I had to replace the finals in my century 22. both were open.. The manual I have is rather condensed. There is no mention on how to set the bias... sure could use that info now that new ones are in place. Mike Bryce WB8VGE SunLight Energy Systems http://www.seslogic.com http://www.theheathkitshop.com "Electricity at the speed of light"