RFcsvt
Veteran CEG'er
The spring perch is meant to be in two parts that adjust separately. To adjust the height you want to turn the upper part that is in contact with the spring, when you get it where you want you will thread the lower part up to lock the upper in place. You want to use both of the adjustment wrenches to get the bottom one tight without letting the upper part move. They shouldn't spin when they are together.