Hey guys, I've been having an intermittent issue with the transmission doing this odd jerking/slipping thing when I either drive over large bumps, encounter a hill, or just engage TC lockup sometimes.

It feels like the torque converter might be losing grip when in lockup mode, which would cause it to slip and jerk, but I remember one time I shifted to third manually and it continued, so I thought I could rule that out. My '96 has about 135k on it right now. Anyone encounter this before?