I recently received a spoolmate 100 spool gun. I am using it with the multimatic 200. I can lay down a good bead with the spray transfer on the flat side of the 3/4" x 3/4" square aluminum tubing 1/16" thick. However when I go to weld the joint sections, it looks like I am laying down worm droppings. Does anyone have some advice as what I may be doing wrong. 100% argon, 14 amps with 320 wire speed. This is what the setting is at for laying down the good bead on the flat.