Richards wants help with his Fleischmann N gauge tank loco and asks readers:

“I have one Fleischmann N gauge tank loco (7000) which I had chipped by the supplier. I want to buy two more, 703002 and 707001 (also known as 7071 on some sites). There is currently quite a waiting list to have locos chipped in the UK so I want to chip these myself. Are there any particular pit-falls I should be aware of with Fleischmann locos? I plan to use a CT Eletronik chip, possibly a DCX74z.”