Pause around tree: most daring! (7) R?S?E?T
Convert from steam: Fades out every last item soon extinguished initially. (9)
D???E?I?E I'm assuming second answer ends ELISE but stumped for an answer.
Any help appreciated.
dieselise: "To equip with a diesel engine or with diesel-electric locomotives"; kind of a shaky definition, I think. "Convert from steam engine" would be better.