Well just when I thought I was finished , came to fit the new rocker cover gaskets and of the 8 rocker cover bolts , 4 of them have stripped threads on the cylinder head - explains why silicon sealant had been used on the old gaskets . Need to fit helicoils so will have to remove the heads to ensure the drilling is accurate . £100 delivered for a pair of head gaskets !! The last one's I bought for a R100 were £10 each