Chest Plateau -- Help !

I’ve been bodybuilding for just over a year now and have been seeing great results. I’ve been constantly increasing my arm strength, back, shoulders, and legs, but I’ve been plateauing with my chest for about 3-4 months now. I’m stuck at a 265lb bench, and 115lb dumbbell presses. My current workout for my chest is – Incline dumbell (4 sets) (10,8,8,6 reps) dumbell press (3 sets) (10,8,fatigue) incline dumbell flys (3 sets) (10,8,fatigue) and cable crossovers (3 sets) (10,10,8)

Monday: Chest/Triceps
Tuesday: Back/Biceps
Thursday: Legs (including calves)
Saturday: Shoulders/traps/abs

Supplements: Simply Whey Protein (~200g/day)
10g of Glutamine / day
And I drink ~ 1.5 gallons of water per day.

Thanks in advance for any tips/strategies.

Do a search on the previous issues and look for Poliquin’s 1-6 principle. This will gie you new gains in size and strength in a short period of time.