HessleHiker,
Thanks. I've been using that lens for over 8 years. I had to check my past photos; I didn't realize it was that long. Here's two of them that I took in December of 2014 with my Canon T3i (600D) camera. If the lens was damaged, I would immediately buy another. I use it all of the time.
Photo No. 1

Model - Canon EOS REBEL T3i
ExposureTime - 1/320 seconds
FNumber - 9
ISOSpeedRatings - 2000
ExposureBiasValue - 0
FocalLength - 600 mm
Lens Model - TAMRON SP 150-600mm F/5-6.3 Di VC USD A011
Photo No. 2

Model - Canon EOS REBEL T3i
ExposureTime - 1/320 seconds
FNumber - 9
ISOSpeedRatings - 1000
ExposureBiasValue - 0
FocalLength - 600 mm
Lens Model - TAMRON SP 150-600mm F/5-6.3 Di VC USD A011