Dan i tried and still can't

[Srubrn]

Dan, I dropped that baby down to 1 and 25 and did ok but I still burned holes in that 16ga. tubing where I had small gaps. I switched over to the HH 135 and finished the job.

[Planet X]

Hey I'm no Dan but the more travel angle the less penetration you will get also if the option is open to position the part where you weld in a drag down hill will also help mitigate burn thru-plus you could always try to use the wimpy o2/argon mixes to help with 'over-penetration'.