Engine Ticking

[SuperX]

OK got a 1990 Supra turbo. I have replaced the power steering pump and most all hoses on the turbo side.

Now I am tackling a oil leak and ticking nose under the hood. The number 3 cylinder head gasket is breaking all up with lots of oil around the plugs and on top of the head. All the 14 mm plugs where more or less lose. I have all the hoses and gasket coming. So I checked the valve clearance to find where the ticking is coming from. All the intake are between .007 and .010 most being at .009.

The exhaust are running from .011 to .014 most in the .012. So I have one out at .014 and two out at .013, is this far enough out to get the ticking sound.
With most being right at the limit of being out worth going ahead and replacing them also. I will try and swap some around and see if I can get the three back in tolerance, but if not will local part stores have the shims.
Is there a chance the ticking is coming from the #3 head gasket.

Thanks SuperX