Atomic 4 is 4 lovers
For the guy with the knock try some Marvelous Mystery Oil in the fuel mix. Add 6-8 oz to 10 gal of fuel, but first just put some right into the spark plug holes.... you will be amazed!
For the guy who was quoted the 4K for the crank.... I''ve got some ocean front property in TN that I can make you a great deal on....You can get a completely upgraded/rebuilt A4 thru Moyers Marine (the guru of the A4) for about $2700.