After talking to local head specialist he said to spread the sealant very thinly over flange with my finger or use a roller. i used my finger and was very careful not to use too much, it was very thin! hardly anything pressed out between the two surfaces...

it's a good point.

i have ordered new bolts, lash adjusters and gasket and will be taking head off again tomorrow to have a look.
will post findings.

Pete