I use SCE copper head gaskets and my head is O-ringed, SCE suggests the use of Hylomar - it is tacky and dries anaerobic, I am not so sure however that it is any better than permatex orange or copper, but sure has the best blue colour i have seen. what gasket makers/sealers do you use and have good experiences with - from application to sealing to eventual removal.
cheers

 

spray your sce gasket with two coats of copper seal spray and let tack up
use honda bond or permatex ultra grey, apply a (thin) coat around your
water jacket holes on your block and on your head and install. i have used this on my race car all year with no leaks to date

 

Thanks for your reply, unfortunately I read it a little too late, do you think I will be allright with Hylomar blue from Permatex only??? Technically I could take the head off again, this will be messy especially with the o-rings.