Third Time Lucky?

Cup Final tickets came in the post today :-) I've seen United play in two previous Scottish Cup Finals - losing to St Mirren in 1987 and Motherwell in 1991 - and I missed the two winning finals against Rangers in 1994 and Ross County in 2010. Hopefully this time round I can see them win.
Although perhaps it needs to be fourth time lucky - United have lost the last three games against St Johnstone in the league, and I have also seen United lose another final - the UEFA Cup final against Goteburg in 1987, a matter of days after the St Mirren defeat.