Couple of Questions about Installing Drop Ceiling Grid
I have done thousands of square feet of drop ceilings. including, 7 super walmart stores, 12 W.L. Gore plants, 27 floors of Hyatt Regency hotel in Nashville,Tn., 6 Big K-marts, and 5- 3 story Kohl stores. I don't like the looks of rivets, do have a Whitney punch.
I prefer, to use lighter gauge tie wire to hold grid in place. I like my grid cut no more than 1/4" from walls on both sides and ends, allows for expansion/contraction. I find grid, laying on edge of wall channel, the weight if tile will turn channel downward showing gaps in framing. I use fence staples driven above ceiling height, and 27 gauge wire to tie the ends of mains tight at straight using a laser. strings will keep straight but sag for level.
as for cutting off the tabs, I've never ran into that. or simply changed layout to prevent it from happening.
as always, just my thoughts
take what helps? ignore the rest.