[CQ-Contest] Two Towers, Two Tribanders - Coax Length for Stack Match?

[Richard Thorne]

I'm in the process of putting up a second tower which will have stacked 
tribanders.  These 3 tribanders will be fed via a Stack Match with equal 
lengths of coax.

My current tower also has a tribander.

I plan on installing a stackmatch II switch between the two towers for 
quick direction changing or spraying my signal in 2 directions.

Is it worth the trouble to use equal length feed lines?  If I use what I 
currently have one feed line will be 278' and the other will be 140'.

Thanks

Rich - N5ZC