I bit the bullet and bought a model of 4705 in BR lined green. It seemed well put together with non of the issues that have been noted. However it didn't run particularly well, seemed to need a lot of power to get it moving, but then it seemed to go quite fast. Not easy to control at all on DC. I good look over it and the front axle seemed quite stiff so I lubed up all the axles and this seemed to improve things somewhat. However pulling a train, even gentle curves slowed it right down, and hills very much so. It wasn't lack of traction, just lack of grunt. The tender seems ludicrously heavy, to the point that I've chopped out the centre section of the metal weight in there. It was considerably heavier than an old Margate tender drive! I also nobbled the pickups on the front tender axle as they were super draggy. Wow what a difference it has made! Corners don't slow it down at all, and hills slow it only as you would expect. After all it is a very heavy loco. An hour of running has freed it up the front axle as well. Anybody else find theirs a bit lacking power wise as standard?
As a footnote... I wish Heljan (and Hornby) would adopt Bachmann's method of making the tender draw bar adjustable. The one you get with this is just way too far apart or way too close to be useful. No in-between.