I have a 5 year old welsh d he is very green but pretty sensible. I have a couple of issues the first one is circling in the school, he is tricky on the left rein so if I start the circle he then throws the outside shoulder and sort of falls out and ending a banana shaped! I have been working on keeping my hands level and maintaining an even contact and using my outside leg and outside rein but he still does it. It makes schooling him pretty unpleasant. He also seems to be quite lethargic in the school and and shunts into a downward transition. Out hacking he is more off the leg but quite often wont stay straight and drifts into the right rein and coming downhills he is falling into the right rein and seems to struggle staying straight. He has had teeth checked, physio and new saddle fitted. I hack for about half hour and school for no longer than 30 mins with lots of walking. He is ridden once a week by a professional and goes better for her in the school. I am not a bad rider but I am really struggling with this. I have a good instructor who has improved me a lot. Any suggestions please?