Been a while since I have been on my favorite sight. Hate to complain here but trying to find out why my 235' is a pining more and more, for about the last year or so she has been just running its best. About the only thing I have done is retard the timing to about 2 degrees and advanced it all the way up to 6 in 2 degreese increments. I run Mobil regular fuel monthly. What could it be? new plugs maybe, points, condenser, let me know gang, thanks...........