It looks like the Model Rail website is being re-built....some good stuff here....
Chris Leigh's Blog seems to have been re-started recently.
The Website has "The Model Rail Archive"....BUT some of the earlier links, such as Chris's Blog in the January 2017 section do not work The Chris Leigh Blog - 'Chassis Swap'
I reeived an email titled "How to fit a DCC decoder into your USA tank..."
On clicking the picture or the text link (Get Tips), I was taken to the new "Tip Cards Home".
Lots of good stuff, but nothing about putting a DCC decoder in a USA Tank!
I do not actually have a USA Tank.....so not rally a problem for me at the moment....