Think I've cracked it, if not conclusively!

I've used the AMS series of 1:250,000 maps available online:

Meiktila is, just to be awkward, located in the north-east corner of map NF46-16. So you need to look at NF46-12, NF47-9 and NF47-13 to get a better picture of the area. In the south-west corner of NF47-9 are two villages called Kyaunggyon and one called Thedaw (the latter being the name of a place mentioned by 215 Squadron as being attacked by one of their aircraft.

I'll work on this all a bit more over the weekend and post more detail.