Do you mean when you are trying to put the new shock ends on you can't get the shaft started into the plastic? Whenever I'm having a trouble getting a screw threaded into a new plastic part I take my body-post hole reamer and shave out just a tiny bit of the outside of the hole, and then the screws will thread right in no problem
problem solved now another question, is there a standard shock and then the 16mm bigbore if so how can i tell which i have, i'm rebuilding all my shocks and seen two different rebuild kits