I had the same problem, the longer the club the bigger the push. What was happening was my club was getting caught behind my body and was coming to far from the inside. and at impact position the club face was facing the pathline. To fix this problem I now use all my left side to pull the club down, then once down around hip high, I release my right side. This allows me to accelerate the club through impact. and best of all the club is now on plane and I hit reasonbly straight.