I got called to do a routine cleaning on a Prescott yesterday. This is the first St Croix I had worked on w/ the versa grate and auto ignite. The homeowner had never removed the burnpot or bottom grate since he had the stove,the ash was packed in the entire burnpot cavity and air intake tube like mortar! I had to chip it out. Then had to remove versa motor and cottoer pin and back of stove to remove set screw in bottom shaker. All this to get behind shaker so the cleanout rod would moove and get ash dump working. This ended up being a 4 hr cleaning. The ash was tan in color and hard like mortar.The air intake tube was filled 2 inches deep solid, I had to take a screwdriver and hammer to chip it out, it was sealed shut. This was the worsed I had seen.