I did a bit of work on the turret of this kit last night and I have found a few issues to watch out for.
The smaller turret hatch part F5 doesn't fit properly with the main hatch part F4. It doesn't complete the circle of the hatch but sticks out significantly. After filing down the hinge on part F5 and test fitting and adjusting I managed to get the part to fit and glue OK.
Part F3 has many raised ejector pin marks visible in front of the vision ports, but the underside is clear of pin marks!
The part cleans up ok though, just be careful that you don't damage the vision ports.
Part F1 the main turret part has on its sides slightly raised lines in a square shape to help align the MG parts C7. However, these don't line up properly with the MG ports. I sanded the sides down so the lines are just visible.
That's as far as I got with the turret, I will post any other problems here.
I built stage 2 the wheels and chassis? a while back. One of the D1 parts was distorted but otherwise it fits OK and the wheels can remain moveable if you don't glue them.
Tim