kodo28,
I don't know if the covers you show on the picture are the newest version, maybe you got an itermediate version or the new version was just not available when you contacted us, I don't know.
However, when the doser heads had been repaired the measurements should be perfect again. No erratic readings.
So I see 2 issues: not new version covers and erratic measurements. Do you have a support ticket open? If yes - please let us continue the support there.
If not - why posting here instead of getting in touch with us directly?
-> please contact us, this will be sorted out quickly
PS: "GHL needs to really take this issue seriously." What makes you think we don't take this seriously? We took it extremely serious and invested a lot of research in testing to find out the reason for the problem and invested a lot in testing different material compositions. We made long time tests (3 weeks running dosers nonstop at full speed - which is actually not according to specification - with no problems at all!)
I think it has been fixed now, you should give us the chance to proof this with trying the newest cover version.