Sorry that it did not answer for a while, I had a busy time.
Right now i started again with the (damn) printer.
As before I'm having some serious problems.
When I start printing the first layer of the raft (thick layer) looks awesome. Than the second layer of the raft (very thin one) has already some serious problems with underextruding. Wheel is spinning but it's not pushing the material. Than the first layers of the print itself are barely even there before for some reason the material is pushing again, After a while it's not pushing, than its pushing again and so on. (Picture 1)