[TimMc]

I recently installed mine Steve. I can't remember them being too hard to screw apart? If I did use vice &/or multi grips I would've put a rag underneath to protect the anodised finish. I removed the green springs (supposed to be similar to the standard DV spring pressure), & inserted the yellow ones. They were easy to install too. I just needed to get the elbow angles right so the DVs didn't rub on anything.