Paintball is on target to defend his Paddy Power Imperial Cup crown at Sandown on Saturday week.
The six-year-old sprang a 20-1 surprise under Noel Fehily last year, sprinting up the hill to win by nearly five lengths.
Connections decided against going for the bonus at Cheltenham and sent him to Aintree instead but he was well beaten there and in four subsequent races. However, trainer Charlie Longsdon believes a further breathing operation will help him get back to his best.
"Paintball will go straight to the Imperial Cup now," said Longsdon.
"We've given him another wind-op and I hope that will help.
"He's only 1lb higher than when he won it last year and he's beginning to work like a really nice horse again."
Tominator, a good winner at Sandown earlier this month, could also run in the Imperial Cup.
Trainer Jonjo O'Neill said: "I might put Tominator in, as he's off 127 at the moment and he might not get in anywhere else.
"He's in good form and doing everything well at home."
21 September 2014Together takes Gowran spoils
Nash eyeing Aintree bid for Busy
Ajjaadd team seek autumn aim
Fitz fine following comeback run
Dark team to mull options
Glory in Abbaye frame
Ascot on Silk radar
Chrome beaten in Parx return
Fab Fitz back in business
Ayr raid heaven sent for Doyle
Improving Angel lifts Trophy
Hunter hits the target at Ayr
Pilot flies to Newbury glory
Close gets Silver call
Toocool too good in Mill Reef
Dark lights up in Clyde
Hill stars at Newbury
20 September 2014King Louis strikes Ayr gold
Yeenaan takes control
Wannabe Yours heads Joel list
Providence supplemented for Rockfel
That could tackle fences this year
Bell saddened by Wigmore article
Limato out of Mill Reef
Horse welfare 'priority' - BHA
Four-timer for magical McCoy
Accipiter comes good for Wall
Hawk leads treble swoop for Hughes
Bamford wants a Gold Watch
Ainippe samples joy of six at Ayr
Goldie pair on Gold run
Angel of the north heads to Newbury
Candy issues Limato Reef advisory
Glorious bids to protect Legacy
19 September 2014Perfect return for Maguire
Rebel has a cause at Listowel
Ryan quartet in Ayr raid
Varian swoops for Marshall
Simcock aims high with star duo
Bolster back on Gold trail
Fahey chasing Newmarket Millions
Time called on Dude career
Makin off to a flyer at Ayr
Festival stalwart Celestial retired
Guest banking on Memory at Ayr
Dettori sweet on World rule
Baraweez on track for Ascot
Maguire raring to go
Watchable handed low Gold draw
Palmer mulls Aktabantay options
Bronze seeking Newmarket gold
18 September 2014Breathing operation for Cue Card
Early conclusion to Levy agreement
Johnson Houghton hearing date set
Walker looks to future with Moon
Red-hot Kirby in Sandown treble
Listed honours for Hadaatha
Busy bags another National
Botti lines up Newmarket raid
Vintage performance from Weld filly
Cup dreams in mind for Forever
Weld prepares Newmarket challenge
McGrath and Walton charged by BHA
Encke camp ponder next move