Ilford Warmtome slippery emulsion

Ok so lately I have been experiencing some screen marks after drying my prints on screens...... this has seldom happened in the past but has been happening quite a bit lately. I have also notices that while shuffling my prints through the various chemicals and even while squeeging them off before placing them on the racks that they are expecially slippery lately. Anyone care to offer a clue. Thanks.

Have you changed the type of fixer you use ?

Ian

Any changes in your water supply?..Evan