Screen Glitchy After Replacement

Hi i recently received a screen and everything was Fine . I installed everything correct except the front camera without the plate because i was lazy so i just put it in there without the metal bracket and the camera worked fine .. Although i did not install the back plate to go behind the digitizer as i noticed there was a piece of tape attached to the lcd cables ..so the first time i attached it to the back of the bare Digitizer.. It was still having touch problems ( holding keys... Certain words not typing, screen swiping ) etc.. This led me to the conclusion the tape didnt need to be on there .. So i Tried Without the tape I just pressed the tape on the battery and my screen worked much better but it still is glitchy

(I also tried cleaning the connectors off with a napkin)

My questions are

1. Can this tape be torn off will it damage anything..

2. Do i just need to let the screen calibrate. ?

3. If something touches the BACK of The digitizer. Does that affect the touch.