LOL it's ok Lisa I also had that problem too & somemore I have more posters than you in my room @_@
I used up all of my blu tack & I had to go & buy another pack because the Kame & Ueda ones I have & let alone the MatsuJun one , I don't know how much blu tack I used for all 3 of them & that goes for my BREAKERZ posters too