My Bose CD/Radio keeps ejecting CDs?

My Bose Wave CD/Radio was having trouble playing CDs - it would start to play then stop, repeatedly. It would also make a horrible clicking noise and was clearly struggling. I tried a CD lens cleaning CD which seemed to momentarily help, then the same problem. I have now carefully cleaned the lens and roller but now the player won't accept the CD - it keeps ejecting.
Your advice as to resolving this would be great.

Bose Wave Model AWRCC6.