About this detail of the Tiger
The bearings for the Tiger's turret were housed in the turret base. They were attached underneath a flat ring that was welded to the turret walls. On the top of the ring, you could see the bolts that held the bearings in place.
Rye Field Model have reproduced these bolt heads in their kit. However, there is a mistake. At the front of the ring, four of the positions did not use bolts; they used countersunk screws, so that they would not protrude and interfere with the mantlet.
These four bolt heads should be removed from Rye Field Model's part.