Frigidaire Glass top replacing

I am trying to replace my glass top. Go the black of the glass top free but I cant seem to release it from the control panel in the front.
Anyone have a diagram or instructions?:confused:

Here is that parts breakdown
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=ples399eci

I could not find a manual for your exact model but perhaps the following is close

Go to the following link
http://appliantology.org/topic/27698-repair-manual-model-fed367cesd/

Then the E_318202121.pdf link on the page
Then Download it (Upper right hand corner of the page).

I hope this works.