much forgotten is that the ground shouldnt impact how a player delivers the club. That would be lie angle if anything at best. The OP has stated quite a few times, he has never been through a fitting, so it would be hard to be critical of the process.
While I don't agree with 'shouldn't', you're not saying it 'doesn't' though, right? Because most agree that people start adjusting based on feedback off all kinds pretty quickly, and deliver the club differently based on that. The ground is surely one of those influences.