My MBWs and my Phongs do that too. It's easy to separate the parts once you have them off the case.
Go ahead and warp the spring, but be EXTRA careful that it stays concentric with the rehaut neck as you press the bezel on. My Phongflake is notorious for this... I can get the bezel on with the spring captured funny in there, and it's impossible to turn. Remove and repeat, and when it clicks on right, it's suddenly very obvious that it's right... it's proud of the case a smidgen, and doesn't want to move much, but when I push it down it turns smoothly.