I reckon you CAN see daylight between the body and bogies of a 40. There's a photo of 40106 (D200) in green on page 33 of Rail Portfolios no.1 with a blue DMU behind. You can definitely see the blue betwwn the 40's first powered wheel and the front of its nose. There's other shots in this book which show daylight. Obviously the daylight on the model is exaggerated to enable it to cope with train-set curves, but it certainly shouldn't put anyone off buying what looks like a superb model.