getting there

Still working hard at the swing getting some good scores,My irons are about 20yds short of what i hit before,im seeming to come across them with my divotts,right to left,it was always a proplem starting my swing with my shoulders.I dont have any sort of swing thoughts on my down swing to trigger it, the good shots just come every thing working together,but the bad shoulder movement losses me distance on irons and a slice on the driver.If any one can help me id be much obliged.I do loose that feeling of my right shoulder not going under my chin but round.regards Greg59