Lots of things you can try. Try not benching so often, rest is something many people forget about. Try lower weights and higher reps, lift 145lb 10 sets of 15 (Ihave no idea what level you are at). Bench press inclines and declines, this increased my benching tremendously.
for flat i do..125lbs (please dont laugh)
incline is 115lbs
and decline is 105 lbs