I presume you are talking about the Big Stick 60.

The incidence for both wing and stab ought to be 0. Prop your plane up so the wing is level. Use an incidence meter or measure from the table to the center of the leading and trailing edges. Once this is level, you can adjust the stab.

It is fairly common for Sticks with a high wing and low stab to need a little up elevator trim. It shouldn't be excessive, however.

You might want to check the CG. If you are nose heavy, you'll be carrying extra up elevator. As I recall, most Sticks build nose heavy. I use a Big Stick 40 for an airborne engine break-in plane and I put the rudder servo in the rear to help with CG. I also added 2-56 rods from the fin to the stab tips to keep the stab from breaking off. Seems to me it is just glued on the bottom. A better method would be to have it mounted in a slit halfway down the rear of the fuselage.

Another thing you should notice in the air is planes with low mounted stabs are more sensitive in down elevator than in up. The up movement is into disturbed air so it isn't as effective. Outside loops will be tighter than inside ones with the same elevator movement.