hey! join the club with the turnigy printer. i got one too! i had a lot of problems with cura, i had to switch to repetier host and slic3r. but with cura, check your retraction, it shiuld be about 4mm, next fiddle with flow rate, then temp "i use pla at 210deg", then play with flow rate and filiment size. is it really 1.76? that could be the problem, try 1.74