Help with leasing mineral rights in wetzel wv

It is in proctor district. Trying to fogure out what all I need to have them invlude in the lease. I got them to raise the signing bonus to 500 and the royalty to 15 percent. They added no warranty of title and the indemnification clause. They said they cant do an assignment clause because the heirship breaing down the interest for the net mineral interest per owner. None of my family has signed so what happens to the rest of the 32 acres? My paperwork only says 0.040039 net for me.