Zapped while tig welding

[Harpkatt]

I bought my first Wire feed welder about 15 years ago, and took a tig class about 3 years ago. Tig welder is about a year old now. I logged hundreds of hours but today on it already but today I experienced something new. Even with gloves and a well placed and clean ground clamp, I was getting zapped while installing a new quarter skin on my friends car.

I made it about an inch and my hand was tingling while feeding the wire. I stopped for a bit and tried again with clamp in a new position but same result.

Has this happened to you?