Alas, my 12 year old CT22 suffered some abuse and suction is much lower than normal. The interior of the chamber that holds the bag has a crack. I sealed it temporarily with clear packing tape, but intend to use metallic tape used to seal HVAC ducts. While things seem all sealed up now, suction is still low. Say about half or so of normal. I don't know how long this crack was around. I removed all filters and even the bag and suction does not improve. Motor sounds very strong. Any ideas on a troubleshooting order I could apply here to rule in or out causes? If the diagnosis is terminal, it was certainly not the tools fault and it was one of the most used tools in my shop for 12-13 years.