In 2007 Forum has taken out all the stops for the 07 Forum Grudge I lock aka the JP Walker. The Forum Grudge I lock is a directional twin with a multi directional grain pattern. Having this multidirectional grain pattern increases torsional stiffness and increased pop from edge to edge. The 07 Forum Grudge I lock is also packing a triax laminate with a carbon beam running through the center for increased performance, and with Forums 7200 sintered base you might as well be driving a Ferrari. Not only JP Walker is the master of the Grudge I lock but recent youngblood graduate Lauri Heiskari is also a Grudge I lock board member. The only difference between this board and the standard grudge is the use of a sliding I lock insert pattern that allows for an infinite number of stance options.