trex 450se v2 pitch slider play

Soooo.... I've been trying to set up my tail to perform at it's maximum potential. I did the fireup mod (well, through the existing blade hole), and put some K & B tail blades on there (not shown in video)....but my tail is crap!!!!!!!! I think it could be the play in the pitch slider...does anyone know if all the align v2 pitch sliders have this much play...or have a fix that I could do???!?!

Cheers,

Andrew