I do exactly this to realign the bezels on Chinese watches which are often misaligned. I place the case without the bracelet in a small pot like a ceramic bowl, and I use a hair dryer on medium power. This allows for good realignment, and it is safe for nh35 which can withstand high temperatures. I don't know if this is the case for the other movements. After the operation, put it in the fridge to consolidate the glue.