(5 hours ago)Andreos1 wrote Why would they stick a decker on the 4?

The gaps are huge on the 34. Solos being reallocated from the 4 to the 34 would surely be the easiest option. 

Minimal impact on the 4.
Problems solved on the 34.

The bridge at Fatfield is fine for a decker. 
It's the tunnel at Penshaw that has the height restriction.

To be fair, the 4 seems to be down to every 30 minutes for a fair chunk of the day or it has been anyway.

Get you now though, I thought you meant swapping the vehicles around rather than dropping boards.

No arguments on the bridges, always get mixed up around there.

On that I'm surprised they haven't lent something from another depot and share the hits out, like if the 20 lost the odd board during the day would it really be the end of the world? I was down that way today and seen around 4 of them and they were mostly carting around fresh air anyway. Similar arguments could be made for the 2/2A and 49/49A at Riverside aswell. The Versa's being the most obvious choice of moving across.