Tweaked my wrist.  I have using 14 oz gloves on the bag and during kick boxing for about 2 years now - mainly because I can pull them off and on faster than MMA gloves when we are doing focus mitt drills.  I hit the bag with bare knuckles the other day and my wrist folded.  My wrist strength has suffered using the big pillows  and I need to correct it.  From now on, 14oz or 16oz for sparring only, 4oz MMA gloves for everything else.

I'm excited about transitioning from straight up kick boxing to Muay Thai.  The most difficult part so far is the transition from throwing a hand - mostly hooks - and not returning to my peek a boo guard.  I spent a lot of time making sure that I didn't drop my hands or leave them hanging out, but I now I want to have a more open stance with the traditional Muay Thai hand position.  The kicks seem to be coming easier, but I am staying low until I feel like I hitting them most of the time.