Parts sticking to raft

Anyone else have a problem with raft - part separation?  I've been doing it manually with an exacto knife.  I typically print at .19 - 6 layer top and bottom - zabs.  I've tried lower layer settings to no avail.  Any ideas?  Thanks

Check the screws on the thermocouple and the heater in the hot end.

They look fine.  This particular printer is less than a month old.  I think i've narrowed it down to location on the print bed.  Still testing tho.

Check the wires into the thermocouple, I had a faulty one with loose wires and it caused it to run hot.