I bought one from Temple's of Whitley Bay as a spare when they first brought them out. I used it for one cast and it stopped working. I took it back to Temples and they sorted me out with a new one. I used it once and it stopped working. You can have it if you want it, it is lying in a box in the spare room where it has been for a long time lol. My mate got one before me, his was still working fine which was the reason I tried one.
I must say though I have bought a few Shakespear items over the years and that is the only one I have had problems with. You never know, they might have fixed the faults by now as it was quite a while ago when I bought mine.
Jim.