Anyone have experience with this?

[Rick]

http://www.mefferts.com/products/details.php?lang=en&category=13&id=175

I picked up a megaminx on ebay, but I'm not happy with the way it moves. I have to go slowly to make sure I don't pop it. I was wondering if anyone else had picked this one up from mefferts?

 

[Pedro]

you gotta change the springs

there's a whole thread about it: http://www.speedsolving.com/showthread.php?t=2752