Hello gents. I just started this kit and have got all the bogies together. The problem is the seams from where the two bogie halves join. I cannot find any reference photo to show if they were in reality two halves with a seam?

As well, the seam under the track guide wheel is almost impossible to get two once they are joined. Should these seams be filled and sanded, or left for realism? Thanks for any help!