So, it seems like 8907 will be out on the M4 again today. I live 10 minutes from it, so a good chance to get some good shots of it. Also, 5014 was on the M35. I know RTS' run out of the 35's depot, but I haven't seen one on there until Tuesday.
Also, someone should try to get the same RTS on two different lines in the same day. 5014 was on the 35 and then the 106 later in the evening.