Ground The Key To Character Bid John Quinn is on weather-watch ahead of Character Building's bid for the Coral Scottish Grand National at Ayr on Saturday.Runner-up to subsequent Irish Grand National winner Butler's Cabin in the National Hunt Chase at the Cheltenham Festival, the seven-year-old is reportedly still in good order.'We'll be keeping an eye on the weather. If the ground is like it was at Aintree for the last three days he will run in the Scottish National,' said the in-form Quinn, who enjoyed two winners at Aintree.'He's in good nick and I intend to run him unless the ground is too quick.'We wouldn't want any mention of firm in the ground, they are going over fences for four miles don't forget.'I would run him on nice, safe ground, with no jar in it,' Quinn told Racing UK.Character Building is the current 6-1 favourite with the sponsors.(C) PA Sport