i know a bunch of the guys that work at the LHS but a few days ago i called the LHS to see if they had a TPS R2 blade to put in my XXX lite and the guy said that there was no way to put a tapered blade in a XXX lite but then i went to another LHS and they put it in right away. i knew i was right but i didn't want to argue with the guy over the phone. a few months before that, my friend was at the same LHS that told me there was no way to put a tapered blade in a XXX lite and he was buying an Adrenaline and they said that if he broke it there was no way to put a blade in it.