(26 Aug 2014, 8:04 pm)Dan wrote Imagine it's because the stands are quite busy as it is? The X1 can often have waiting time there, and the 4 likewise.
Adding another bus to the mix would mean buses going onto the stand behind possibly.
That was my initial thoughts, but then look at the number of services (and frequency) which use the stand (can never remember numbers), the 37 does use.