Contact sensor tampered

My front door contact sensor (gen 2 ) will occasionally show and send notifications of tampered. When it does, it send many in a row (17 back to back this morning). I’ve tried uninstalling, reconfiguring, resetting it, but the still come. I’m wondering if the gap is still too large between the 2 parts. I added a riser. Can a second riser be added or do they not stack? Thanks

Pretty much you can configure them anyway you like, all you have to make sure to do is the magnet in one has to get close enough to the sensor in the other for it to recognize open/close.