@Trumpetb This is my last comment to you:
The subject in this thread is very specific. Your (too) many words seem more like damage control than a better analysis.
I have said everything applicable and will not engage with you in completely unrelated issues.
You can try to bend my words, my meaning whatever, this is not my problem. It is obvious that you know better. What motivation you have to continue is of no interest to me. In my world, people that choose to ignore are "ignorant", meaning conciously choosing to ignore supporting facts. In earlier years, I in fact had a crusade against mouthpiece safaris that have ruined more players than ever helped. Just observing the used mouthpiece market it becomes apparent where the empty promises of range, endurance and sound are. I "saved" several students from this obsession.
It is VERY EASY to tell if an issue is the player or the equipment. The OPs description is perfectly adequate for my analysis and qualified suggestion. There are telltale signs indicating if there is something about a mouthpiece that is not optimal. None in this thread for the OP and none for you based on what you report about your own playing.
The most damaging advice for the question presented in this thread in my opinion is, "just try it". We have an acclimation period and as I said, that can be months. When playing around with our habits, certain controls MUST be met to have a qualified result.
Do not expect any further comments to your posting. It already has gone far beyond anything that I would normally even bother with.