I got 152 2 more times yesterday. I KNOW it's possible.

For you guys who have never finished the game, the last level is as easy as the first level so I'm not sure you even made it to the last level.

NOW...the second to last level is really hard and that is what you are mistake=ing as "the last level". (I think)

Mike's right, the key is to complete the front flip when you case the jumps on level 3 and the 2nd to last level.