Please help meeee 
I just got this P-bass from Rondo and it is BEAUTIFUL
I was playing it while sitting down and I was like "This is the bass for me!"
Then I put the strap on and stood up and the head DIPPED TILL IT WAS BELOW MY WAIST!
Since then I have tried playing it standing up but haven't managed to play it for more than 10 minutes before my left hand started cramping from holding the neck up
Can somebody please offer a suggestion for raising the neck to normal height?
BTW this is a short-scale so I know the normal-sized headstock will unbalance the lighter body
pics
http://img215.imageshack.us/my.php?image=cimg1561jd9.jpg
http://img216.imageshack.us/my.php?image=cimg1562kx6.jpg

I just got this P-bass from Rondo and it is BEAUTIFUL
I was playing it while sitting down and I was like "This is the bass for me!"
Then I put the strap on and stood up and the head DIPPED TILL IT WAS BELOW MY WAIST!
Since then I have tried playing it standing up but haven't managed to play it for more than 10 minutes before my left hand started cramping from holding the neck up
Can somebody please offer a suggestion for raising the neck to normal height?
BTW this is a short-scale so I know the normal-sized headstock will unbalance the lighter body
pics
http://img215.imageshack.us/my.php?image=cimg1561jd9.jpg
http://img216.imageshack.us/my.php?image=cimg1562kx6.jpg