I experienced the same thing. A couple of years ago i went from a Palmer 162 (great board for speed and grip) to a Sims FS 750 157. I started snowboarding in -91 and was quite advanced for my first 14 years. In -05 felt like getting back to freestyle so a got myself a shorter freestyleboard. I rode it for 6 years and never got it to work. I slowly got worse for each year riding it. This season o got myself a Nitro Team Gullwing 157 and everything felt right. I´m on rails again. I´m hitting big kickers again. All thanks to this board (or the new cambertech..).
Excuse my spelling, I´m Swedish!
Nitro Team Gullwing
Burton Mission Doom