When I said the inside of the drive, I meant the platters -- they ARE inside the drive, not the external casing, of course.
And before you're quick to lash out words, have you even tried this method? Freezing a hard drive that sounds like it's already dead, with a minimal change of future damage by freezing, sounds like a better solution than potentially spending thousands of $ with OnTrack, don't you think?
Oh, and sorry, I was not aware that it was your industry.