I have a WR450 05, which is US spec, and so I assume had the standard springs in the forks, with which I was only getting 50mm of sag with me on the bike. So from the racetech spring calculator, I ordered a 0.428kg/mm spring, and fitted it, but there is little or no change in the sag. The back of the bike has the corect sag, but the front hardly moves, it almost seems sticky, but I also changed the oil, and set all the clickers to standard. The back of the bike almost seems to move to easily. Any help would be greatly appreciated, as I am pulling my hair out.