Anyone use the newer string trimmer line where two lines are joined in the center and wind on the spool as one line? I imagine during use it splits to two separate lines easily. My question is does it work any better at staying untangled on the spool? I use the old standard line and am unable to get through a whole spool without having to stop, disassemble the spool, untangle the line, re-assemble spool and continue. Is there a secret to winding the line on the spool. I am winding in the correct direction...