[crunchy1]

[ QUOTE ]
Here, you’re taking the OP’s rather non-descript read of “not particularly aggressive”, then defining him as a tight-weak passive player with a rigid set of rules for how he plays 2-pair and rivered straights. The only variability you allow this player is that he sometimes won’t even raise with the nuts.

[/ QUOTE ]
I'm defining that player based on a weak/low-information read AND the generalizations that I can make on relatively unknown players after playing 100K+ hands at the 2/4 level.

If you can't fold to a c/r here - then you probably should be checking behind.