I am finishing out a 3 car garage with two bedrooms and a rec room. Since I plan on taking the walls down when the kids go I tiled the floor first. I knew that I couldn't shoot the floor to frame walls without shattering the tile but, I thought that I could drill anchors. Seems like that might have been a bad idea now. I have a 3/16 grout line. I don't suppose it would be possible to use steel base plate with 3/16 or 1/8 screws into the grout to anchor the base plate.

The walls are 10ft.
If I have to, I guess I can saw cut the tile to properly anchor the walls. What a shame to cut up my brand new tile work. I'm looking for an option that minimizes damage to the porcelain tile.
Options?