I don't quite get what you're asking either but I have these pedals also and I remember finding the slave pedal a little tricky to sync up with the main pedal, so here's the answer I guess you're after...
The pedals come with a T shaped key yeah? I lost mine ages ago but I remember it being a kinda unusual shape. Anyway, what you're meant to do is put the long part of the key through the hole in the UPRIGHT POST that lines up with the DELTA PLUS.... and adjust it that way. I think what you're trying to describe is pulling that DELTA PLUS... thing beyond the UPRIGHT POST to get the key into the nut to adjust it, which is what I did until I sussed that the key goes through the UPRIGHT POST. I remember thinking it was a bit of a design flaw as it was such a faff.
That it?.