Thank you, I spotted the helicopter at a good price last year and snapped it up. Aha, yes a laminated transformer core would be a good source of weighty ballast.
Sadly it looks like its been left in bright sunshine for years, the original unfaded red is visible on the underside. Unless you're an expert sign writer I think this one isn't worth bothering with as there is a lot of detail to restore. I bought mine, on the same website, from a chap in the USA last year and it was around half the price (albeit missing the driver and a three week wait for the delivery). If you can, like KevinD, I suggest you wait for another to come up, they are not hugely rare.
The other two houses still have the decorators in so they might be a week or two away from being completed. I do seem to be playing catch up - you've certainly created a large number of the characters and vehicles, not to mention the non-Camberwick related models too. I'm in awe of your achievements.
