Phone [Q] Can You advice how remove LCD (NOT glass) from frame (S3)?

Hi, I am looking for change my old scratched frame on my S3. I normal can separate front glass without any problem. But, I had one broken fill display and have tested on it remove LCD from frame. Before this I look much videos on websites, Googled but all is so dificuld for me. in the midst of LCD and frame is very very very adhesive tape and there is so big problem. I have tested one hour just play paper cards and heat gun and very carefully gradually separated. But lcd is so thin.
The result was (test on broken LCD) much more broken LCD
Is it someone here have exxperience how separate with great result for change frame?
Thank You for Your advice