Snowcamoman,
If you've got WT moose calls, you have some good quality. I haven't heard what sounds they have however, and moose make a number of different sounds at different times and for different reasons. IMO, moose are the easiest critter to call, with the possible exception of gray fox.
Moose are the least critical of any amimal I've called as to making the sound correctly. Anything close will work. As examples: I called a big bull by accident when I snagged my nylon pack on a limb and scraped the tree bark and brush as I got it loose. I didn't know a moose was near, till the bull challenged it with a series of grunts and raking his antlers, and started toward me right away. When a duck landed on the pond between me and the bull and quacked once, the bull grunted and charged at the duck.
My 15 year old son made atrocious moose calls to my ears, all with his mouth, and he called a young bull to within touching distance as we stood in an old road (season was closed). I used a diaphragm elk call to call in a nice bull once, just to see if it worked. Anymore, I never take any calls and just make the sounds I want with my mouth. Once in awhile I may pour water from lunch bag, or splash a little like a moose walking in water. Use a stick you pick up to scrape brush.
However, if you have a smallish bull and you make a big bull challenge, the small bull will sneak away. If a cow is not in the mood and you make a bull call, she will sneak away. If she is in the mood, then she will trot around and whine seductively to you. Bulls of all sizes come silently to a cow in heat call, and bulls of all sizes usually will grunt in response to a bull grunt, at least once. If they are not in the mood, they may just stand and listen or walk away. Also, when it is outside of prime rut time, a bull will listen to a cow call silently, and may wait till the next time he gets up to feed before he wanders over to check on the sound, which may be hours later. If you hear one sharp whack like a hickory hammer handle hitting hard seasoned wood, or maybe a few of those like sombody hammering, that is apparently a question challenge. A bull has heard you, announced his antlers and is asking if you are another moose.
As in most calling, set up is far more critical than exact sound. Good luck.