Thanks Garry.
I finally was able to get the "soab" bolt off the pulley.
The 2 idler pulleys turn very freely and smoothly so there is no need to replace them.
At the point I am now, how big of a job would it be to re-seal the upper front engine cover. There is a slight oil leak.
Do I need to remove the distributor/cap? Does the valve cover need to be removed?
Thanks again.
JackD