I replaced the "pad of death" in my dad's old Yashica Electro 35 and shot a few rolls of ultramax 400 on a recent trip to the PNW. I basically shot a whole roll of just blurry shapes beforehand to make sure it works (didn't focus any of the shots as I'm retarded).

I think I'm getting the hang of it and I'm starting to understand the limitations of an older film camera. First time shooting film outside of disposables and a little old point and shoot camera I had when I was a kid.