So I was looking over the Design Quirks list in BattleMech Manual l and found that some of the rules were different from the ones provided in Strategic Operations and was wondering if they are two different takes on the rule that you choose between or if the BattleMech Manual Rules are the updated version of the rules?
There also appears to be added Design Quirks in the BattleMech Manual
Example:
NARROW/LOW PROFILE
BM: (2 points) Causes a glancing blow if MOS is 0-1.
SO: (3 points) +1 modifier to be hit.