I have no life either so I wasted another abing hours all my tips and tricks.
Comply t-400 tips on backwards with the tape mod still gets my vote. It's likely all in my head but try as I might, I can't get them to sound better.
I have to keep reminding myself, it's all about the tube, stupid. Don't block it or impede it. Then all I need is a good seal. Deep is probably better but a good seal at all, will be an improvement over stock.