A big fail!
I started assembling my Miyota build and ran into a BIG problem. Well not really but it's stopped me. With this movement you do the usual and cut the unused pins on the back of the dial, no problem. There's a dial ring which needs to be fitted to the back of the dial and then you fit the dial to the movement and there are two screws to tighten which hold it all together but I don't have a screwdriver small enough. Googling tells me it's 0.6/0.7mm so I'll order one and continue once it arrives. I can't carry on as the dial is loose, it's not like the Seiko ones which are a push fit, this one has to be tightened.
Oh dear. I didn't see that coming but you live and learn

So it's all on hold until a new precision screwdriver set starting at 0.6mm arrives from Amazon tomorrow.
PS.
One nice thing about the Miyota 8215 movement is that the stem release is more obvious than with the Seiko NH38, it's right out in the open and easy to get to. The dial ring and the securing screws are a faff though. I prefer the way the Seiko dial goes on with just a push fit.