Hi Robert, see if this saves a phone call.
First, have you inspected the suction tube? No signs of cracks? Fully seated position? Both felt strips in place?
Second, check the angle of the suction slot (it might have been rotated). When I bought my 16.5 the suction was not adequate. Checking with VPI Mike told me the slot should face slightly forward. With a 360 degree compass at the outside end of the tube the slot should point around the 185 degree position.
Since you've owned it 5+ years you should be familiar with the sound level of the vacuum. Does that seem normal or has it been diminished recently?
Good luck.
First, have you inspected the suction tube? No signs of cracks? Fully seated position? Both felt strips in place?
Second, check the angle of the suction slot (it might have been rotated). When I bought my 16.5 the suction was not adequate. Checking with VPI Mike told me the slot should face slightly forward. With a 360 degree compass at the outside end of the tube the slot should point around the 185 degree position.
Since you've owned it 5+ years you should be familiar with the sound level of the vacuum. Does that seem normal or has it been diminished recently?
Good luck.