My stove, a 2005 25PDVC was a hand-me-down from my mother. I assumed that all the parts were there but I was trying to do some problem solveing to figure out why the right side of the vent does not blow as hard as the left. I found out that I am missing my Impingement Plate, the plate that would normally be above the burn pot blocking the vents from ash. I have ordered it. The tech guy said to bang on the back wall with a rubber mallet to free up the right side. Any advice thoughts or concerns.