I did get a an error 4 message once on Saturday at work on saterdy(gutted I had it my head on for a bit(but it difenntly wasn't cold) the rest were okay though. I think I am going discuss the concerns about my job and how its not posibble to retest somewhere sooner with my team, however since the rest of the test were okay it may have just been on odd moment I'm I think I might sit to my garden either tomorrow or frosty in my work evening before doing my before bed test. so I'm can be confident for work Friday(working in the north)