Inconsistency at range with longer clubs

Hey all, I’m new to the site but I am a huge fan of the SagutoGolf school and program thus far. I’ve been using Tom’s swing program the the past 3 weeks and I’m already seeing great results at the range. One area that I’m still struggling with in terms of consistency at this early stage is distance and consistency with my longer clubs. I’m hitting my shorter irons and wedges (GW-7 iron) pretty solid and straight with good distance but I’m struggling a bit with my 5 and 6 irons and 3 hybrid. Shots are fat, thin, right, right, left, etc. Not sure how best to diagnose the issues and videotaping my swing is my next strategy. Perhaps it’s due to the fact that I feel more over the ball with my weight more on my left side from beginning to end with the shorter irons so therefore I’m getting more consistent contact but it’s a bit of a mystery thus far. Any insights would be appreciated. Thx