On your snipers, you can have zero toe and equal weight left to right and still have a pull. What you are wanting to do is “square” your kart.
You will need a long carpenters level, or string, or another long but very straight object. Place the level so that both edges of the right rear rim are touching it. Measure the distance from the level to the front of the right front time and the rear of the right front rim. When those measurements are the same, the right front is now “square” with the rear of the kart. From there, set your alignment to the left front with zero toe. Now your kart is completely square. From here you can set toe on each front wheel.