Really stuck on a few.
25d.Carol,Bostonian,rubs you the wrong way(4,U?,A,3,2,??R?)(4,2,1,3,2,4)
50a. Also in big project.(5,3) ?T?N? ???
53a.Ready to signal important moment in court(3,5) ??T ?O?N?
56d.Connect nothing up to end of truck(4) ??N?
41a.Light tractor chugging round(5) T?R??