I've refitted one side of my Rear Strut (and Spring Assembly) into the bodywork, through the top rubber, aligned the tab up with the key hole in the bodywork and have done the top nut up (holding the push-rod to stop it from spinning) until the nut is tight and noticed there is still a fair few mm of vertical movement - that is, I can move the strut/spring assembly up and down in the bodywork, even with the top nut tight. I have checked the other side, which I haven't taken off yet, and that appears to have a similar amount of movement! I was expecting this to be a tight fit without any movement, is it normal for there to be play?