[gbmidyear66]

Thanks for the advice guys (my issue is the Plenum to I/H). I am going to...

1) Re-torque all the bolts. Assuming that does not solve....

2) Install new set of gaskets bare after checking fit of Plenum and I/H and degreasing. If that does not solve...

3 Make up a set of Rubber gaskets - thanks for the info Scott