OK just my .02 cents on things. There is/was a storage unit full of LFG (Locking Freedom Grooves) or whatever left over from Rev/Forum/Capita I can't remember up in Vancouver that the person was just randomly selling to companies/people as need be. Chances are if this is DIY the guy bought them there, now for the sake of durability I can tell you the LFG system was pure crap it is far worse in design than ICS. ICS now is designed to essentially lock in the whole grove where as LFG sucked up and pulled into the top sheet. The creates a hallow spot and whacked out flex patterns in my opinion.