Hey Andy, I usually stand them up on the sintering brace verticallystraight to the tray no beads under the brace. Just this one broke while coloring cause my coloring pen leak blue and my other hand twitched and it broke. So I sintered it anyways to see what would happen and got lucky.
Lingual sprues when I do large implant bridges are 3mm in wieland cam, facial sprues are 2mm.