Possible Clues:

• Steep incline misjudged badly under expedition's leaders
• Dye? I'm one colour left out
• Go all the way through
• Soak putting away litre in confession from one down?
• Inspire learner to leave my unhappy profession
• Instil or inspire
• Fill Tramp's puzzle in the end: incomplete Tramp's for filling
• Penetrate
• I'm Conservative, not Liberal soak!
• The setter's sad, avoiding end of cruciverbal fill