Inglis p35 shooting high

Picked this up last week and I’m really liking it, however the one problem I’m having is that it’s grouping about 8 inches high at 5 yards. I also had my beretta 92 and 226 for comparison, both which grouped great so I wasn’t just having some kind of weird off day. I’ve contacted sds/inglis, no response yet.

Has anyone else had this problem? Also small sidenote, I haven’t figured out how to grip this with thumbs forward yet, at first I was almost using the slide catch as a gas pedal but it was catching the slide every round

Picked this up last week and I’m really liking it, however the one problem I’m having is that it’s grouping about 8 inches high at 5 yards. I also had my beretta 92 and 226 for comparison, both which grouped great so I wasn’t just having some kind of weird off day. I’ve contacted sds/inglis, no response yet.

Has anyone else had this problem? Also small sidenote, I haven’t figured out how to grip this with thumbs forward yet, at first I was almost using the slide catch as a gas pedal but it was catching the slide every round