Kim Bye,
Just a couple of points of correction here. Predator has added 0.05mm, not 0.5. 0.5mm additional would bring it up to 13.25 lol. Presumably a typo.
Also, the ferrule material is most assuredly NOT LBM. What you might be thinking of is how OB changed their ferrule material on the new Plus shafts with the white ferrules. I believe they went to an LBM or LBM like material. Predator ferrules are still made of some kinda top secret plastic. The BK3 ferrule appears to be an LBM type material, but all of the playing shafts are not.
I will say that for me, the one difference in the feel that I most notice is that the 314-2 seemed to have a more linear amount of squirt. The 3 series seems to have less at low speeds and more at high speeds. This is sort of an odd quality, and definitely takes some time to get used to. I love the hit of the 3, and the overall construction quality is very good, possibly better than the 2. However, having played for several months with the 3, I just got my 314-2 partial back from Andy Gilbert. Now this partial I got was *the nuts*. It is probably the nicest Predator shaft I have ever seen. Absolutely flawless grain, beautiful tone (sound...hit, whatever you want to call it). It just seems *natural* to me. Also it is way lighter without that big chunk of phenolic in the joint. This happens to work perfectly for me, since I am tall with long arms, and use have for the past 4 years used a mid extension. My cue feels wonderfully balanced now.
I would definitely recommend trying a partial shaft, and having your cue maker install the joint. So far of the 2 314-2 Predator shafts I've got from Andy Gilbert, they both seem vastly better than the off the shelf ones I have...better weight, better hit, far more feedback to the hit. I just love them. My 314-3 is off the shelf. It is a very very nice shaft. But I bet I would like a 314-3 partial even more. Anyway, food for thought.
KMRUNOUT
Yes 0.05mm

I have changed tips on quite a few 314/3 and the ferrule has got a very fine weave in it, looks alot like some sort of LBM to me, but you are probeably right about being a proprietary material of some sort.
The shafts seem to be better quality than 314/2.