Jockey Katie Walsh believes Seabass faces a sterner test than 12 months ago when the partnership has a second try at winning the John Smith's Grand National.
Walsh finished a fine third on board the 10-year-old, trained by her father, Ted, in the 2012 renewal of the Aintree centrepiece.
The alliance will be reunited back on Merseyside on Saturday week as Katie Walsh again attempts to become the first female rider to win the National.
She told the Daily Mail: "Seabass gave me an unbelievable spin last year and when we pulled up, there was a smile on my face as if I was after winning it.
"For a few seconds I did think, 'My God, I'm not going too bad here', but he emptied a bit on the run-in.
"I can't wait to try again, but it will be tougher this time because Seabass is a year older and has risen sharply in the weights."
Seabass and stablemate Colbert Station warmed up for the National on Sunday evening when the pair engaged in a workout after racing at the Curragh.