How Many Things Did You Have to Check in Mayflies?

In your most recent novel in Mayflies you have the first half 1986. How many things did you have to check as it were to make sure that you weren't actually misremembering from something that actually didn't come along to the 1988s? Because of the fact checking regime that editors like Thomas Williams brought in at the LRB, and we all now think endlessly of the checkability of things. We all triple check everything. And of course I did my best with Mayflies to made sure that the things I remembered were not just lyrics and things that could be checked. You see the objects, you know, that particular lighter that I've got them lighting cigarettes with an apartment Manchester in