My boy had LF bindings on a 2011 slingshot and he constantly had to tighten the bolts and his stance would constantly widen.. After he had problems with that the whole slider itself broke. Slingshot ended up sending him a 2012 board though and he claims the 2012 is alot stiffer so idk if it will have the same problem as last year.
+1 on the 2012 being alot better in the fast track department. That said, I ride 2010 Ronix Kais on my 2012 recoil and have no problem with bolt length or any sliding. I had them on my 2011 until i broke it too.