I bought a aftermarket Manhattan Wheel 16x3 for the rear wheel. The drive belt is straight but wheel looks offset to pulley side? I use spacers 1 3/8 for pulley side and 5/8 on rear disk side. I got it all together it look like the wheel is to more towards the drive pulley side , need to move over more to rear disk side. Im not sure im a newbie. My factory wheel got stolen so I'm trying to get this right. The has 3/4 reducers to fit my axel . I know the belt will walk turn the wheel backwards it will go to the left and go back rolling it forward it walk back to the right. I know pictures dont show much I'm trying to see if it ok or i did something wrong.

 

Have you string lined to see or used a straight edge ?
The wheel looks ok from here but it's hard to see in a picture.
The sprocket may have to go to the left a tiny bit.
Some shims/washers may be needed.