my trailer uses springs that have a closed eye and the other end is an open c.The bushings that were in the springs (what was left) was a nylon bushing with a steele insert. The replacement bushings i got are just nylon for the closed eye part of the spring and the part for the C is just a steele insert. Is this right? The nylon bushing fits tight in the eye the bolt fits tight.The C part that uses just a steele insert will move in the spring 1/2 inch