figured it out and indeed i did something wrong. I copied mark his config 1-1 and it couldnt find the first gauge anymore due to path difference.

i adjusted it and for the 727 it works fine :)

i did the same with the 707 and it works fine as well, but at the point where you have to go fly via hdg on descent, the hdg doesnt respond and goes into a total different direction, even if i set the hdg correct... i adjusted the AP switch to HDG, but no response, doing the same to MAN, no go as well... any idea what i'm doing wrong on this aircraft?