I had better results with the second batch of prints. Still some issues though. I forgot to add support to some of the pieces so those prints failed. Printing perpendicular to the bed will often fail because from one layer to another there's a sudden shift in mass which breaks off from the supports instead of lifting clean.
So, I'm printing those pieces again on a slant to alleviate the strain and build up the mass incrementally. This is all fundemental resin printing 101 - stuff that I have learned but got out of the habit.
Because there was no support, the top tanks drooped underneath - you can see that in the lighter piece alongside the darker filament printed/primed ones. It's a little smaller too so I've scaled the resin one to 105%. Also the exhaust piece snapped when I was prising it off the plate - another good reason to add support. The gyro sight pieces printed great though.
Here's a tub of exterior greeblies in both resin and filament - some useable, some not.
..and here's the current print in progress on the printing bench.
On these small prints you can tell if they're printing properly if you hear a little pop when the plate lifts the print for the next layer. So far, all pops.