Demon Carburetor issue

Hey everyone, I have a 10:1 compression 360 with an airgap manifold, tti headers, ported x heads, comp xe284 cam and a speed demon 750cfm carb that's having some sputtering issues between 1500-2000rpm when in drive at about 25mph. If its left in drive and I floor it at that rpm range it sputters, doesn't accelerate and almost freezes and then after a few seconds takes off. If it is left in 1st it handles it a little better but still has a hesitation. I am thinking this is too much fuel and am thinking I need to jet it down. Any recommendations on what jetting would be a good starting point? I think it has 72 and 76's and a 4.5 power valve but will double check.

Thanks
not to sound like a smart ***!!! but I would use it for a wheel chock or a door stop!!! i've had too Many bad experiences with them and have lost too Many races because of them,, if you had the time I would tell you all about it.but that's just me go back to your Holley or an edelbrock send ether of them to rustyratrod (Rob)and he will make it like new again!!!=D> sorry if I have rained on your thread Artie