I can't comment on the number of faulty examples, but one only has to look at the sheer numbers of these models available for sale to realise that there is a problem.
A3s and A4s are very large locomotives in 7mm scale. Most people who do have 7mm layouts don't have layouts large enough which are suitable for what is a large, express locomotive which requires large numbers of coaches in tow. I suspect that is why there are so many available - it was a poor choice on the part of Hattons and people just don't want/need them.
If you look at what Heljan and Dapol have produced, the diesel scene is well covered and there have been some good choices in steam locos from small to medium in size. Not sure about Dapol's 3MT - I would have thought an Ivatt 2 or a Std 4 tank would be far more popular as they were far more widely used across the country.
A3s and A4s are very large locomotives in 7mm scale. Most people who do have 7mm layouts don't have layouts large enough which are suitable for what is a large, express locomotive which requires large numbers of coaches in tow. I suspect that is why there are so many available - it was a poor choice on the part of Hattons and people just don't want/need them.
If you look at what Heljan and Dapol have produced, the diesel scene is well covered and there have been some good choices in steam locos from small to medium in size. Not sure about Dapol's 3MT - I would have thought an Ivatt 2 or a Std 4 tank would be far more popular as they were far more widely used across the country.