That PWK is JB Welded together at the mounting flange.
I don't know if you remembered Ace, or if that's how they come stock but you just reminded me that I actually JB welded a replacement flange on myself. However, I can FEEL the air leak coming out of the engine where the header goes in. Quite a large leak... like a pulsing hair-dryer. I'm going to try 2 new gaskets.
Because that Goldstar header isn't stock, when you get it on and the mounting bolt behind the foot-peg lined up, there is VERY little wiggle room to adjust. It kind of lands where it lands on my AVL. I'm hoping an extra gasket will seal it up otherwise I'll have to try a sealer of some kind.
-If I use a sealer does it make header replacement difficult? Or does it scrape off?
-Do you still use a gasket with a high temp sealer? Or is IT the gasket at that point?
I'm assuming you sort of line the exhaust port with a hefty amount and then place the header pipe in.