COLOSSUS NO 158 GIANT CRYPTIC

I NEED HELP WITH
1A ITS A BIG WIN WHEN CAPTAIN SPARROW PUTS TOP BACK ON
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1D GAVE REASONS FOR ALIGNED MARGINS
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3D IT WAS NO SURPRISE WHEN WHEN BLIP REACTED STRANGELY
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11A IS ON THE REBOUND FOR EXAMPLE WITH ENEMY COMMENCING PROLONGED RESULT
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15A STARTING OF IN IT I HAD GIANT PROBLEMS
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18D MOVED WHEN CONTACTED
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21A DISCUS ALTERNATIVE BLADE
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66D TEST UNFORTUNATELY IS TO BE LEFT AS IT IS
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THANKS MAIZIE