One other note about chest 'dropping' (and why did dog people start using that term - it sort of conjurs up visions of dog parts falling off in the yard) One the the biggest problems in basenjis fronts right now is those that are too narrow and have a concave area between the front legs. I'm NOT advocating a front like a bull terrier but there needs to be some 'fill' there to have a good front but it's not the fill it is the actual structure of the bones in the shoulder and upper arm that - if not correct- actally pull the 'front' too far forward. A quick visual scan from the side - if the deepest part of the brisket is well behind the legs - the front is too far forward. We need to pay attention to the actual shoulder structure to make sure we are not continuing to double up on dogs with a short upper arm. That limits front reach, and creates a not efficient side gait. So go catch your dogs and do a quick check - measure from the top of the wither to the point of shoulder (the most prominant bone in the chest.) then from that point to the point of the elbow. They should be the same. if they are not - stand up your dog and put your hand between the front legs - if you hand is IN FRONT OF THE FRONT LEGS - great - if your hand is between the front legs the front on your dog is too far foward.
More than you ever wanted to know probably - LOL