I notice this is your first post, where were you 8 months now when we needed you?
It sounds you have been using an unreleased product, were you part of the testing crew? If so, do you care to share your setup and burnout cycle?
I believe what patrickleephoto is trying to accomplish is to determinate if burnout residue of various resins is complete.
Granted, the test is not "of lab standards", but it provides some indications.
I understand you blow and suck your flasks (not pun intended whatsoever), and this has been done (to my knowledge) since the late 90s by the instructions of a Japanese Stereolithography machine manufacturer by the name of Meiko.
Nowadays, there are materials in the market that offer little to no burnout residue. It's not irrational for an Ember user to expect that property from his material supplier. If however, their formulation is more advanced in other aspects, at the very least they are expected to offer print settings and casting instructions during release. Not to mention case studies...
Like I mentioned above, let's begin with repeatability, definition, accuracy, post curing stress handling, etc, and we can discuss casting later.
Bare in mind that the models I printed were as basic as they could ever be.
I am eager to try more demanding geometries once I receive product guidelines.
Those trays don't come cheap...