Has anyone hit a ceiling with Trimix, even after increasing the dose or switching to Quadmix?

I’ve been wondering if anyone else has experienced this.
If you’re getting about a 70–80% erection with Trimix and keep titrating the dose as instructed, did you eventually reach 100%, or did you seem to hit a ceiling where no matter how much you increased the dose, it never got any better?

For those who switched to a stronger Trimix formula or to Quadmix, did that finally get you to a full erection, or were you still limited to around 70–80%?

I’m interested in hearing from people who have actually gone through this. What was your experience, and if you never got beyond 70–80%, did you ever find out why?