It Came from the Depths - S1-E12
Audio problem: Before Mike runs off to fight the kraang who were attacking Leatherhead, Michelangelo's and Donatello's lips don't really match what they're saying.
Audio problem: When April, Casey, Donnie, Mikey, and Leo defeat the creep, Casey says, "That's what you get for messing with my mask, freak." When he says "mask," his voice changes.
Audio problem: In the living room in the farm house Leonardo is healing in the living room when Leonardo says "I can't stop thinking about Master splinter maybe he's not not really gone," his lips go out of sync.