comments:
You need to buy a $25 Plug and Feather kit and a 16mm Masonry bit. Drill four holes along seam tap these in. https://www.walmart.com/ip/4-Set-Plug-Wedges-Feather-Shims-Rock-Stone-Splitter-Hand-Tools-16mm-And14mm/16951058737?wmlspartner=wlpa&selectedSellerId=102506552&selectedOfferId=356C56DD586D32598F3A6D8190437789&conditionGroupCode=1&adid=22222222228356C56DD586D32598F3A6D8190437789_14069003552_202077872&wl0=&wl1=g&wl2=m&wl3=42423897272&wl4=pla-2449037643288&wl5=9017118&wl6=&wl7=&wl8=&wl9=pla&wl10=5452708626&wl11=online&wl12=356C56DD586D32598F3A6D8190437789&veh=sem&gad_source=1&gad_campaignid=202077872&gbraid=0AAAAADmfBIo0SJNwJQaY8VBpw2pqxs6h9&gclid=Cj0KCQjwi8nRBhDhARIsAHZf_pYjndJa98eJb-lt64MpADqu1ZrVl9lqjEkwiKA8aoAcc1C7jlr_xmAaAnyDEALw_wcB