Yesterday morning, I fitted the top mount spacers in an attempt to cure the dreading knocking. No dice it didn't fix it so I jacked her up and whipped the wheel off to have a poke around underneath I looked up into the wheel arch to fit my apex spring had decided it didn't being in the right position and wanted to be above the top cap instead of in it. Couple of hours later the suspension was all back in place ( much swearing happened to get it in place properly) and the knocking has gone plus the ride is back to normal. Happy Chappy