Jimbo, I would love to dump a whole slew of suggestions on you, but first I must know what you're currently doing. Not just for chest either, everything... leg, tris, etc... I need to know what rep ranges you're training at, and what exercises you're doing. Are you eating to grow? Juicing?
Some quick thoughts: try a 3/3/5 rep scheme where you're doing 3 reps with a weight you can get for 4, next set 3 reps with like 5-10 pounds more, next set go back to your first weight and try to hit it for 5. (This can be done with any rep count, too. Currently I'm doing 5/5/8 on most everything.) You could also try partials in a power rack, as well as bands and chains.