I recently replace a front idler that was making some noise- (bearings were completely gone). I bought a brand new (aftermarket) idler but I noticed that piece the idler bolts to, which is a sort of slide piece that gets pushed out by the tensioner- has some side to side play in the frame. This means the idler, and thus the track, can move side to side (closer or further from the opposite side track) by almost 1". Is this normal? There doesn't seem to be any abnormal wear and nothing appears bent but I was surprised to find this much lateral movement in the front idler?