Having just recently acquired a Sheraton Defiance lathe, I'm trying to figure out how I can remove the cross slide so I can give it a good clean and service. I've removed the screw that secures the nut but the nut seems to have a spigot on it and it would only come free if the cross slide was raised about 5mm. Surely you don't have to remove the gib strip in order to remove the cross slide? Any advice would be appreciated.