I would seek more specific game plan rather than mechanical tips on the swing. If it's stats you're looking for when you walk off 18th green, what's the allowance per each hole? Before I start my round, I'd like to set allowance on entire 18th then concentrate on each hole, then take my stats against that. Not focusing on what's my fairway hit, GIR, putts, etc.. focusing on what was my miss, whether or not it was common miss, if it was common miss, was it right/left/long/short.
By tackling my weakest, I'm one step closer to overcome that slump. I know I can't be Sergio nor Mcilroy, IMHO game of golf comes down to numbers at the end of the day.