Hi Darren
'tis done!
Fine tuning worked perfectly, and I now have a fully functioning TiVo!
Now know lots more than I did this morning!
In the process today found a dickey RF lead, and that my channel 11 (WIN) RF is weak compared with the other channels.
Fixed one and will work on the other.

Again, thank you so much for your help in all of this.
I suspect Troy and I will be a frequent TiVo flyers.

Next stop - settop digital box - which technology?

Regards

Don