true mate , but as i usually change rings at same time of course i need to turn it over, i get a mate to hold tightly a piece of 3x2 over all 4 liners while i turn it ive affectionatley named it k ha ha failing that if you do bump one up , then take them out and seal them with a bit of this

http://classicandspeedparts.com/inde...mart&Itemid=53

i use this instead of silicone on the cam carrier too its brilliant for metal to metal parts, just make sure you only use it on the outside of the cam carrier up to where the 4 cam seals are and around where the plug lead holes are, anywhere else in the carrier near the middle except horizontilly between the cam seals requires no sealant as this is were the cams get there oil from! silicone will work but curil is fit and forget and is similar to what is used from standard