Door lock barrel

Hi all my locks are very temperamental on my 89 defender 90
I bought new lock barrels but are too short and don’t seem the correct thickness. Does anyone have a link to the correct part needed ? Thanks all
Looking forward to getting her upgraded

I have an image of the new barrel that doesn’t fit and the old one I took out but not sure how to upload it

https://www.landyzone.co.uk/land-rover/do-not-post-questions-please-read-before-posting.271449/

Ask over 'ere
https://www.landyzone.co.uk/forum/defender-90-110-130.7/