Years ago, I grew tired of trying to thread the "regular" type of Bobbin where you either need a threading tool or you have to suck the thread up through the tube.
This bobbin has a "mini" throat up near the end. I have posted a photo, but guess you have to look closely to see what I mean. I won't go back to the old type. This one is a "DJ". Not sure that company still makes them, but I did find a new version similar to it.
DSC02717.jpg
Also, only one other entry in my fly tying contest!!! Please send a photo of your Blue-Winged Olive Dun to me so I can put it on my blogsite:
flyfishing99.blogspot.com
email photo to byhaugh1@mac.com