I currently have my 3-4 irons set at 1.5 upright and 5-9 at 1 up and my wedges .5 up......ive noticed the heel is digging into the turf on my shorter clubs and was just wondering if this could be a swing fault or just not fit right....7 iron to wedges contact with the turf seems to be real in consistent but a miss is when that heel digs into the ground any suggestions would be appreciated.