No, that's not what you want to use for the bias mod, because that type of trimpot won't give you nearly fine enough control for dialing in the correct voltage. You need a multi-turn trimmer. Here's the one I used (visible near the bottom of the photo in the first post in this thread):Originally Posted by Commodore 64
http://www.mouser.com/ProductDetail/...F8w7dO8xNvA%3d