Not the cast iron part but the pipe that hooks to it and has a curve to it and goes to your cat.

Ok cool. I will check that next. I appreciate the idea. I will let you know what I find.

Down pipe is clear.

I have a possible new theory though. I have noticed that I am using oil. I have burned about 3/4 of a quart in about 3 tanks of gas. It is not leaking because there is no oil where I park it in the garage. I wonder if I am getting enough oil past the rings that it is causing the sparkplug issue? I have antifoulers on all the plugs but maybe that is hurting me is this case. Maybe it's causing them to burn up because of all the oil instead of just fouling up like normal.

I would take the anti foulers out and run it down the freeway real hard at night, pull off the freeway and pop the hood and see if your exhaust manifold is glowing at all.

I know this is going to seem abhorrent to most of you guys.
I'm going to post it any way.
If your Zuke is still running the stock carb. Its screed up...After sitting that long I GARONTEE IT...
 Here is the part that's liable to generate hate mail...Take it to a shop and pay the $80 or so $ to have it diagnosed...They will plug it in to their computer and VIOLA no more guessing....
 Sounds like your running real fat--- extra fuel is washing past the rings ( which are old ) mixing with the crank oil (drain some and smell it- bet there is gas in it) Thinned oil washes back by the rings . All of this will cause the fowling, smell, and oil loss...Boxcar...