1121We should receive an answer shortly. You do not want these dimensions for rough or final machining I trust. Recall Drive Source would like them as rough castings. I did recall that you discussed having extra material added so that the 'foundry' could 'rough' machining up to the rough machining requirement which will be done in-house at Drive Source.1125Drive Source wants to avoid sharp corners on the completed drum assembly. Ultimately, this part gets final machine into 72602 (attached). I am not sure why both these radius - corner weren't put on the final print, but they need to be applied to finished print 72602. Aside from the sharp corner avoidance, there is nothing particularly critical about the two items you are questioning.