Help needed in indentifiying the 3 adjustment pots on an older Whitfield 1993 Advantage s/n WH59432.This is an older control with the two knobs.There are 3 silver caps covering these adjustment pots.I am also looking for any type of owners manual and or service manaul for this stove.I have been told that this is a Advantage II.Can any one confirm this by the s/n.Would any of you stove techs out there possibly have an electrical diagram for this stove.Thanks in advance for any help.