HELP! I'm into changing the upper slide rails and the tension rail. The slide rail pins were removed quite nicely with the 6mm bolt .and washer stack. When I removed the tension rail plug , I expected to find a simililar threaded pin. But no such thing! It is a hollow pin that is not threaded so how do you get it out? The maintenance manual says to use a screw driver> How does this work...there is nothing to unscrew or attach to, to extract the pin>. As usual thanks for any insight>

John Ewen