What about RTV? The black stuff sticks pretty good while remaining pliable.
I found a set of new diaphragms at a reasonable price. On the way from down under. Purchased a battery and will be installing LED lights.
It does look like you have a GSXR motor in there.
That motor looks pretty messed up going by those 2 pics. Maybe time for a 1260 big bore and redo on the head?
It's the 1052 so 1077 I think is next size up. I just missed a complete Bandit 12 Piss me off. Looking at GSXR750 or Katana 1100 or 750 as possible motor swaps. just want to keep it cheap for now. If it will cost to much then it goes on the back burner for now.