I am going to be timing my M50 after having the head off and had a question about timing it. According to my Bentley manual it appears that to time it all I have to do is make sure that tool 11 2 300 (pin) is in bell housing, mark on timing chain cover is in line with mark on harmonic balancer, and that cams are aligned with use of tool 11 3 240 (brace). Is that it or am I missing something? It seems too simple or not precise enough. Any advice would be great.