Can't Remove Wafer Core

[cedave]

I have an access panel wafer lock on a John Deere Backhoe that I can't remove the core/cylinder from.
I've tried depressing the back wafer thinking this would allow removal of the cylinder, but to no avail. I think this lock may have a pinned-in cylinder core but I'm not certain.
Would appreciate any help I can get on this one. I would like to remove the cylinder so I can re-key the locks. This backhoe has 4 of these access panels that I need to rekey.
I looked for replacement lever lock assemblies, but can't seem to find any on the web. The hoe is a 1995 so these type of parts are long discontinued.
Please Help!!!!!
Thanks Dave

[cedave]

Almost forgot, also if anyone knows what key blank I might need for these locks that info would be much appreciated. I tried an old Briggs and Stratton key I had laying around and it kind of fit ok but not sure what the key blank code would be for that.