I went a month or so ago to get fitted for some irons. I decided to get some ping 425 irons since I wanted to test if my GIR would go up with a more GI iron. Since the saying is go with the most forgiving iron you can look at. Since I don't really care about looks I went with these. Well weeks and weeks and weeks later. They show up. I put the blades away and grab these. Went to the range. Spent some time getting used to them. I am hitting a little heel side. I tried to choke up a touch but still same spot. Any advice, is it a weight, fitting, length thing? My MP20 is centered. All advice needed. This is about 15-20 balls trying to figure it out.