I am trying ot fit somthing as simple as a gate closing spring, But i am struggling to get it to tension up, In theory it looks a simple job, but for the life of me i cannot get the little pins that ( I think at least) as to supposed to stop the spring turning to stay in the little holes, and as soon as i put any tension on the spring the catch pin escapes, Below is a little piccy of the offending item, HAS ANYONE HAD ANY EXPERIENCE OF THESE BLOODY THINGS and if so, HELP!!!!!