I'm not an expert by any means, but I had asimilar problem last fall. Arrowsweren't grouping well as the temperature fell. After re-tuning the bow and contacting PSE, I realized thatI was the cause ofthe problem, not the bow.

As the temperature dropped,I tended to be a little stiffer in my stance,causing the loose groups. After understanding what was going on, I was able to correct the problem.

Maybe in the warm weather you arechanging your formor shifting your anchor point?Hope you can fix the problem.

-Rick C.