thank you guys for your comments and suggestions.
I am well aware of the fact that the harmonies were overdone, I guess that was the whole idea. As to the suggestions of singing my own harmonies, I have never managed to do that properly also due to the fact that I have a very limited vocal range.I might give it a try one day but for the foreseeable future I will concentrate on appropriate use of the TC Helicon. Apart from the singing here I will also have to concentrate on the accompaniment.According to my missus the strings are too synthetic bu personally I like them. Be it that the righthand volume at times is clearly too loud. I also like doing this song ( and another one " Factory " - Bruce Springsteen) with this kind of arrangement, that is no drums. Perhaps I should have a walking bass though.....
When playing the guitar I only use the Vocal Harmony stompbox and I think I have managed to keep it down to very modest levels as you could hear in the guitar bit.
(https://www.youtube.com/watch?v=YVgoRzi5LLg )
Anyhow thanks again for all your well meant suggestions !!

regards,
John