I recently bought an EB Ray 5 (WooHoo ) It was strung with flats. I decided to re-string it with rounds for a while. I put the E-G flats on my Squier P, and tried to tune it to E. It was almost impossible, I thought they were going to snap. I ended up tuning them down to BEAD. Has anyone else run into this problem, or someone have an explanation?