Pieceword

With the help of the Across clues only, can you fit the pieces into their correct positions in the grid?

ACROSS 1 Most important • Trade association 3 Chicken ___ masala, popular Indian dish • Keen attitude 5 Adaptation to run on mains power 7 (Of that) name • Metal clip • Illuminated 9 Feel nauseous • With enthusiasm • Small serpent 11 Tendency to hinder and get in the way 13 Stimulate • Behind 15 ___ train, easy money • Person who locks up premises