Let me second the "DO NOT allow brake cleaner around welding" comment. I welded a small piece for my new streamliner that had been cleaned with brake cleaner, dried by compressed air & had sat untouched for a while. I thought it was safe to weld but the small residue unknowingly trapped in the joint created the gas, I breathed a very small amount & my racing plans abruptly ended for last year. The hospital bills & other expenses may keep the liner in the garage again this season. Now you ECTA guys know why we never returned with the SCREAMLINER.