Keep each permitted removable set associated with its original burner and follow the manual's diagram. Similar-looking caps can have different sizes or locating features.
What the observation means
Mixing parts can change seating and ignition. Cleaning all burners together without keeping their identities can make reassembly uncertain.
A useful next step
Work only with the appliance cool and safely off. If you cannot establish the correct arrangement, stop rather than trying combinations under flame. Obtain model-specific help and do not alter holes, file edges or substitute a part simply because it appears to sit flat.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.