Hi Eddy,
That's why we created the ZT-HE hot end. The Zortrax hot end works with a few brands of PLA and some other materials, but most PLA will click. We did experiment a lot with 0.5mm nozzles and the v2 hot end and it might help short term with some materials, but you'll get underextrusion on the initial raft layers. Raising the temperature is also going to make raft and support removal difficult. Your best bet is to get the ZT-HE, which works with everything, with 0.4mm nozzle, and at lower temperatures. I'm printing most PLA and PLA/PHA at 195 - 205ยบ these days.