Solved Slicing for 0.8mm nozzle with Matter Control

Hello everyone,
I have just changed the nozzle on my printer to 0.8 mm and I changed the nozzle size in Matter Control accordingly. And since then the slicing is off. The default 0.06 mm infill overlap is sufficient only for the support but it is way too small for the object itself. I mean the infill lines are too far from the perimeter so there is no bonding together. If I increase the infill overlap to about 0.5 mm (!), it's OK but the lines in the support material cross each other and over build the crossing section -and that's not good either. What should I do?