Can someone please look up this mans records on Ancestry / Fold3 / FMP

on this individual who Died aged 48 at Warminster

I am trying to clarify 3 things

1) His Rank CWGC has Air Mechanic 2nd Class - but other records say Air Mechanic 3rd Class - Does his service file under just G Shaw have any detail?
2) Cause of actual death rather than died
3) Unit - Either Stores Distribution Centre (CWGC) or 7 Stores Distribution Park?

Thanks Paul