damn. i just noticed: the via transition here is at 90 degrees. i've been switching off except 1 layer at a time so didn't notice. arse.
i'll need to shift all but the TX2 via set down a fixed amount so i can get a second wiggle in the right-hand one one layer 1, to make the track come in to the top right corner (1 o clock). rather than as they do now: from right side (3 o clock).
TX2 i'll have to move to the right somewhat...