I noticed there was a rovio high score facebook page tonight. They have high score competitions which are great for giving you an idea if your near maxing out a level. on 3-8 a guy got 111k so more points to gain there. I just gave up after i one birded it but now i know you can get a decent amount extra im gonna keep plucking away.

Oh... il try to link you to the page when i get back to my pc.