Allright fork gurus... I'm stumped. Our shop just got in a 2016 Giant Glory Advanced 1 for a customer. Built the bike up and the fork has a real bad "knock" about 1/2 of the way through the travel. The fork has the new Fit4 RC performance damper not the Fit4 RC2 factory damper. Pulled the fork apart, pulled the damper apart, replaced all fluids with correct amounts, and put it back together. Same noise. It will make the sound either on or off the bike. Cant tell which leg it is coming from, but in the steel spring leg, there is a huge isolator running up the center of the spring from the lower spring perch... is this really necessary? The 40 RC2 I have from a couple years ago doesn't have this... Anyone else had these apart yet? Its incredibly simple on the inside and for the life of me I cant figure out what could be making the knocking noise. Any help would be appreciated.