RE: Diaphram call help.
I haven't bugled with it yet, but they are not much different than turkey calls. The MAJOR problem I had getting a turkey call to work was the fit in my mouth. For some reason I have a very narrow pallet, I either have to cut them down, or even better, I use youth/junior models, they seem to fit much better. When you put it up there it should pretty much stay on its own, if it doesn't it probably isn't fitting right, if the call is curving down the sides of your teeth (like mine was), then it is to wide.
Once you can consistently get it to make noise, any noise, then you can change tongue pressure and air volume to figure it out.