this original spring lasted right around 7-8 years, which was about the expected life according to the tech. He said that size spring was rated for maybe 10k cycles.
>Someone paid $X for 8 years.
He recommended a torsion conversion, which included 1 spring, 1 tube, 2 drums and 36 month warranty on parts and labor. He said this much larger (maybe 2" or 2.5") spring was rated to 20k cycles. But this whole process cost me $463.
>You paid $463 for possibly 16 years.
On top of that, I seem to have lost the ability to do my own repair in the future.
>I don’t see this.
I wonder if I could have just had him replace the same smaller 3/4" spring that's good for 10k cycles for maybe $100.
>Unknown.
And now knowing what spring failure looks like, if the builder was capable of installing the internal spring, then I could probably figure it out from some youtube videos too.
>Maybe.
Please help me understand what I gained by the torsion conversion.
>longer spring life at $29 per year.
Because right now, with the benefit of hindsight, I feel like I paid ~4x (or more) as much for 2x the life.
>Uncertain.
And there is a risk to this job. You paid him to assume the risk.