Trunk not opening sometimes

Hi, my skoda fabia mk1 2001 hatchback, no central locking, has developed an intermittent issue. 

When you pull the trunk release lever it sometimes doesn't open fully, it gets into an mid unlocked state like when you don't shut the trunk fully. You have to pull the lever again to unlock it fully. 

My trunk bump stop is cracked but it is still there. I think that the release cable should be adjusted. Am I correct? 

Edited 22 June, 20241 yr by Adinko