If you had used epoxy, I have heard and read that you can carefully use a heat gun to soften it up. This may be worth a look to see if you can get it to move to the right place or remove it and restart. Also by your description, it is very minimal and will probably fly just fine as I am sure there have been many things like this happen and they had flown fine. You may just need a slight bit of down elevator to keep flying level to make up for the lifted stab. I am no expert and I am sure others will chime in here. These answers are things I would try if it were me.