Nick Peacock (Wicklow Bloodstock Ltd), Willie Mullins and Paul Townend were relegated to the runner-up spot for the second race in succession when Air Supremacy landed the Ballygarry House Hotel Novice Hurdle at Listowel.
McManus' racing manager Frank Berry said: "He's battled away well but I suppose the other horse making a mistake has changed it around. He jumped much better than he did in Killarney and he's progressing.
"We'll find another little one for him and take it from there. We wondered about the ground but he handled it, and probably would go on a bit softer and looser."