[johnnymopar]

I think for piece of mind you should just take off the head and see exactly what is happening. If you just re-torque the heads it may prevent a leak for awhile, but the root cause of the leak will still be there and the gasket will have been weakened, for lack of a better word, by the existing leak. You may as well do it right, right now. Little problems turn into big problems if neglected.

JB