OK, so this will somewhat reconcile with the post I saw from steveb stating that he still prefered the copper evaporator cores, but his shop now installs the OEM vareity.

Am I reading this correctly that certain aftermarket copper cores require additional fitment time which is not offset by the lower cost?

Is this an issue of WHICH copper core is selscted?

Have you found ACM worth the effort?

I have not looked for lowest-cost alternatives, and after reading the glowing recommecdations for copper cores, only priced the ACM, which seemed to have several enthusiastic endorsers.

Am I mistaken?