what was the outcome of this dancer?
I actually created another thread giving the lot numbers, just in case it affected other pump users. Sorry, I should have posted them here too.
Things were fine for a while but then I started checking every time I disconnected (I was having lots of highs). It doesn't happen all the time but, when using "Fill cannula" to make sure there's no air there, up to 0.3 units of air comes out before the insulin does.
The other week, I was getting rid of a bubble in the tubing. It seemed to be taking longer than usual to come through the tubing so I raised the pump higher than the end of the tubing and the bubble started moving more quickly. I haven't told Medtronic about that as this is my 3rd 640G and no one else seems to be having problems, just me.
I still think there must be some kind of problem with pressure.
Normally my pump is higher than my site but I do wonder about night time when I could easily lie in such a way that the site is higher than the pump. If I'm high in the morning but was fine before bed, I wonder if there was a "pressure problem" during the night.