That's great. Very nice of you to follow up.
I assume you're now going to be using cpanm for installing modules from CPAN, as recommended and facilitated by perlbrew ... if so, I urge installing App::cpanminus::reporter in each Perl version and contributing your test reports to the CPAN Testers service (by simply typing cpanm-reporter after you've installed a module or a group of them). It's a great and almost effortless way to give back to the amazing infrastructure that makes working with Perl (including different Perl versions on different OSes) so easy and enjoyable.
The way forward always starts with a minimal test.