This is the only image I can find where they are different - and they are really different!
Is this a photograph, or some kind of painting or drawing - it's difficult to tell?
I prefer the look of the masts being equal TBH, but shortening the rear will mean cutting just above the searchlight platform and adding a sleeve. I think the stiffening wire will prevent me from using an internal spigot. I'll need to remove about 10mm, but then all the arms and platforms will be at the same height.
This one is fighting all the way!