Originally Posted by
houston
Flathead screws: reasoning , harder to apply too much torque that will warp the block
James : if you are tearing up the oring its because your shimming is lower than novarossi recommended
.65mm is the very lowest i will shim a novarossi , .60mm is ok but ......
Just leave the oring out , wont harm anything
However Neal sends em out is how its shimmed..I will measure when I get back home..The flathead screw now makes sense But I still hate them..I have never in my life heard of anyone warping their blocks with metric hex head cooling head screws but I guess anything is possible.....