Issues wireless charging iPhone 13 Pro Max on QI wireless chargers

[ct1211]

I'm curious if others are having this problem. I have a Mophie QI wireless charge pad that is so finicky when trying to get it to accept my iPhone 13 Pro Max with a slim case. Worse I just bought a 2023 Genesis GV80 with a built in QI wireless charger and it will not charge the same phone with any case on it. Also its very hard to get a consistent signal without a case. I've tried several of Apple cases none will work. When I try an iPhone X with a case it works perfectly. I'm thinking between the size of this phone and the fact that the camera bump surround of the cases is creating enough of an angle /Gap as to be too far to latch on to the wireless signal. Anyone come across a workaround short of getting a different phone?