360 does not seem to be making power and is slow in the 1/8. Need help and/or suggestions

440BelII said
One of the sprockets was a 1/2 tooth off from the other. So my first question is, which one's lying???

If you set the #1 piston at TDC and then checked the location of the dots of each sprocket then you’d know which one was closest to being at the 12 o’clock position, right?