I contacted Canaan, and they told me not to worry about it unless it runs consistently over 105C (the most I've seen that chip get to was 100C for a few minutes before dropping down to 88C). Not sure if its worth cracking this open and checking everything, or sending it back and losing a month or two over one ASIC.

Also, funny enough, it found a block this morning, no kidding (you're welcome, slushpool).