wired 360 controller vibration and PMTTYD

[rmcin329]

i'm using dolphin 3.5 64 bit released 1 month ago, running on windows 7 professional 64 bit. In short when enemies attack me(a pider pokey or gloomba for random examples) the vibration seems to only work about half of the time. For actions like earth tremor or smashing an enemy with a hammer it works 100% of the time. I have the controller configuration set up as motor L|motor R for vibration.

EDIT
forgot to mention, i'm using Microsoft driver for the controller dated 8/13/2009, windows cannot find a more up to date one when i try to update it.