Looking at your lass i wish the baby was made by me.,, ..just messing im too old me think's..lol.. good stuff with your pooches they look in fine fettle and im sure that pup will only get better..
If you buy second hand mag box..turn it upto number 6 and place a small magnet in side..the magnet should rattle about all over if it is working good..if you dont have a little magnet hold the smallest one you can find gently in your finger's and you should feel it vibrating..here the magnet i use to test my mag box...it's the little silver thing on a penny.
You will hatch the quail no bother but they a far too energetic for the hen's..you are best sticking with incubator's and leccy hen for them little head banger's..
If it was my dog im afraid this season would be over for it..plenty of rest and lead walk's for the next couple of month..and avoid any quarry like the plauge till next season..
What do you mean by pace..not a dig im just wondering.. as folk most certainly have different veiw's and idea's..my idea of pace is a dog running at speed but not putting everything into it..and running for a long period of time covering a lot of ground with each effortless stride...i have seen the odd grey with good pace and even a whippet x grey but never a pure whippet..as i think there back's and bodies are too small..