Finally managed to get the filler cap off the ZXR after a few attempts.
Fecking thing was stuck solid on the catch…
I tried spraying with release agent and taping with a rubber mallet (take note Wayne) and after a few attempts over a week I gave up.
A YouTube video showed a method where you take all the screws out, jack open the flap with plastic shim and with a watchmakers screw driver you tap the one security screw digging into the side of it to loosen it - then spin it out - didn’t work
So having purchased a new OEM filler cap for a reasonable price from CMSNL when I bought the other bits I needed, I drilled through the old cap and removed the security screw.
Low and behold it still wouldn’t come out
So 4 more strategic drillings above 4 more screws and finally it came off
This is what I found - in fact I’d already removed some of the crud before taking this picture…
Here’s my drillings…
Tonight I fathomed out how to strip the lock barrel out of the old cap.
I had a bit of head scratching as the assembly design had changed

but the old barrel still fitted…
Just got it all back together in time to watch today’s TT highlights on ITV4 at 10pm

and it’s not on