Wanted: Fuel Cap

I'm looking for a good fuel cap assembly for my '79. I purchased one of the cheapo ones from ebay and it's complete garbage. Doesn't seal or anything.

So yeah, looking for a complete fuel cap if anyone has one.

CMSL list one here
www.cmsnl.com/kawasaki-kz1300a2-1980-usa...fuel-tank_510481019/

I checked out that fuel cap link and it shows as unavailable. Bike Bandit -Same. This leads me to believe that (possibly) an OEM cap was available but that inventory has been exhausted.

The knock-offs are not vented and propav8r has confirmed what I suspected by the photos - JUNK.
www.kz1300.com/index.php/forum/carburato...-fuel-cap-lock#15998

This eBay link however indicates that our OEM cap was also used on other bikes so this may be a better alternative source - if this is in fact, the case.
"CNC Gas Fuel Cap Tank For KAWASAKI KZ400H1 KZ440A1/A2/A3/A4 KZ440D1-D6/G1 KZ550D"

amendment: seems the above listing is typical EBay seller hype. Not to mention the rather laughable is the "CNC" notation !

They are available from Z parts in the U.K.

www.zed-parts.com/product-page/fuel-tank-cap-z1300

Z1300de. also have the oem cap - at a price!

Neither one of those have the lock assembly though. Mine is destroyed, but the actual cap is okayish.

I really just need a complete, good used cap. Tried the alternate application as suggested, but I ordered a $5 cap for one of those bikes (don't recall which) and the cap is shorter, and the lock cylinder doesn't interchange.

Here's a listing for a KZ440 cap that looks shorter and doesn't have the vent. I believe one similar to this is what I bought and couldn't make work.