This is only .028 thick so I should be ok peening it with my old Direct Connection tool. I worked with and ran a lot of Stainless grease lines during my 33 years as a Millwright in a steel mill. We shall know very soon if this works and it should help a lot of guys out facing the same issue.
I would slide a piece into a junk block back to the first lifter bore and try peening it first. Depending on the stainless It may be hard to peen. Just a thought of concern. I remember seeing copper used not anything else.
