About this detail of the Tiger
Rye Field Model instruct you to attach a sighting vane to the turret of their "Eastern Front Tiger." This part was carried over from their previous kit, "Tiger 1 Initial Production".
The sighting vane was not a standard component for Tigers; it was made and attached by s.Pz.Abt.501 in Tunisia. It is not commonplace on Tigers of the Eastern Front. Specifically, the 5 Tigers covered by Rye Field's decal sheet are visible in dozens of photos, but none of them show this part attached to the turret.
You should not use parts B64 or P27.