Ender 3 and leveling problem

[piotr1990]

Give us an example of how large the gap difference is.

Its hard to tell how much is it. for me the difference is simply too small to be really precisely measured.
Don't see it reliable enough to set it up as I'm ending up with strings of plastic or blocked nozzle.

Thinking to go ahead with a glass bed

https://www.ebay.co.uk/itm/Creality-...w35pcwJA~#rwid

Not really looking forward to it. I got that printer to make my projects not to make a project out of that printer it self. Took me hours to assemble it and I still cant get any print out of it. I was kind of more happy with my Monoprice Mini I3. Never had any problems with it. Even that it had as well slightly warp bed in the middle but I could still make it to print nice.

Are there any issues with glass bed?
Does it without a problem transfer heat?
I stick it directly on the aluminium bed without the mat right?