Following his victory at Flemington last year, Mostly Cloudy had two shots at securing a Melbourne Cup start, but fell short, finishing fourth in The Bart Cummings and then fifth in the Archer Stakes, both times at Flemington.
Busuttin and Young tried to win a Cup start earlier in the year, however Mostly Cloudy ran third in the Roy Higgins Quality (2600m) in March and later a closing second to The Map in the Andrew Ramsden Stakes (2800m) in May, again both times at Flemington.
Mostly Cloudy has had one run back following a winter break in the warmth of Queensland, finishing fourth over 2000m at Caulfield on August 31.
Busuttin said Mostly Cloudy ran well that day and is set to run well again.
"He doesn't know how to run a bad race, but he doesn't win that often which is frustrating," Busuttin said.
"He deserves to win a race, but he's not the easiest horse to ride in a race.
"He doesn't travel, and he can find himself in some tricky spots, but it's not an overly big field.
"He'll get luck some day or other, hopefully it's Saturday and then all the pressure will be off."