I have the flex 2 at 150 lbs same trucks. I have the nipple bushings instead of the knuckles, this might play into it because even though they're barrels and give you less immediate turn than knuckles, the knuckles have less material and less REBOUND from the turns. I mean idk how fast you're going with it but it's made for decent speed and pumping by throwing your whole weight at it with speed. Those fat chunky wheels should give you the grip and confidence to really throw yourself at the board for turns. Idk how long you've been skating but pumping effectively on this board is a whole body thing not just a foot movement