Need some help here. I got a .45lb spool of Stoody 101HG and I’ve been having trouble with the welds being really rough and also just not setting out well. Now I will say I noticed that the paperwork calls for 98/2 and all I have is either 100% Argon or 75/25. Unfortunately i had someone pick this up for me so they didn’t know. With preheat I can make them okayish. Is the gas the main culprit or am I just bad at it?

Finally took time to get my spool gun installed. Only downside is (provided I installed correctly, I went by Lincoln’s directions and even they stated this) it seems the wire feed on the front of the machine has no effect on the spool gun and the only WFS adjustment is a numberless dial on the back of the gun. But hoping to run some test beads in a couple of minutes!
Edit: attached are the first beads I’ve run with it. Never touched a spool gun before and this is on just some old scrap 1/4 aluminum plate a customer had me remove and I kept. Running about 10cfh on argon, E setting on my machine (A-G settings) and no clue on wire feed. Machine called for 400 for .035 4043 on 3/16 so I just guesstimated it and dialed it down a bit. Any advice?

Hate to ask a dumb question but how possible is it when welding edges together to laminate plates for trapped air to bubble up through the weld even though there’s some other gaps? When welding up this transom piece I noticed the puddle had little tiny bubbles coming up into it. Wasn’t like porosity bubbles cause eventually they’d seem to die down if I paused enough and never came through the weld.

Today is a first for me. I’ve welded 14 gauge lines up on an aluminum transmission cooler off a Toyota Camry before, and I welded a bunch of 1/8 plate but today is the thickest I’ve done before. I don’t have any pictures as of the moment but a client is having me build a transom riser that’s constructed out of 3/16” aluminum plate and 2”x1/4” aluminum square tube. No helium available and my machine is limited to 230 max AC. This is going to be fun!