Qantas Frequent Flyer - What's going on with VH-OJE

Seems as if B744 VH-OJE is starting to show her age. She has regularly been on the QF5/6 run in the last few months and has had considerable technical difficulties recently. I spent 4 hours extra in Singapore on 26/06 because of notchy controls which could only be fixed by deboarding and removing parts of the roof. There have also been considerable delays on 22/06 and last night 07/07 out of FRA. Whilst I understand that most aircraft will have technical issues from time to time, surely the frequency and severity of those experienced recently by OJE are unusual?

Given siblings OJB/OJF have already departed for the great field, maybe on care and maintenance.

Also OJU back in service, first of the non-ER reconfigs