I'm finally back after 2-3 hours fixing the mayhem caused by the msblast worm. Someone needs to find the guy and use his head for a mop and his butt for a broom!

I did a compression check on my 49 3600, it has a 55 235 6cyl engine. The cylinder farthest back, I don't what the number of the cylinder would be had 0 compression. The other five ranged between 125-127psi. The engine runs rough but does not smoke. Any advice on what the problem may be?

Thanks!!