I run my root pass at around 130. Try to keep the stinger closer to a 90
degree angle. This will push the metal through a little better. I just ride the
rod and if it starts to get hot and I blow a small hole I just feed it a little filler rod
and it fills up instantly. Just keep a light touch on the rod so, you can make
quick adjustments.
Do you have a petal or scratch start? The petal makes it so much easier.
My 7018 rods are 3/32 when I used them. I ran them at 80 or 85.
Hope this helps. You will get it just takes practice.