Gents, As always much good advice. What I really miss is Tracy's manual mixture trim. Tracy I assume it can be resurrected in the new setup?? Lynn, the fixed timing seems to work as you say, Can you alter the mixture with a trim pot? Neil Unger. -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html