It drives like ****.. Ran sea foam. Changed spark plugs and wires. Changed oil. Flushed the coolant. Flushed the Tranny. Done a lot but it's like it hesitates on the throttle a little, It's slower and it's not bad but enough that I wanna trade it in.. The transmission shifts ****ty every now and then.. The only thing I haven't replaced is the fuel filter.. Ideas??