Sorry No Goats, you stepped in front of a target I've been meaning to shoot at for years.
Raising or lowering a spindle is incorrect terminology. The spindle/axle don't move. Stays where it is. To move it, change the tire size, deflate the tire, put a piece of wood under the tire. Moving washers above or below the kingpin barrel raises or lowers THE FRAME !!
Lowering the frame at the LF takes weight off the LF tire which increases cross. Thus, removing a top washer allows the frame to drop. Same thing happens on the RF wheel. Lowering the frame on the RF decreases cross. SIMPLE ! No confusion. Raise the frame increase weight, lower the frame, decrease weight.
A Newbie asking for help is already confused. Telling him to raise or lower the spindle will drive him nuts.
Another tip from an old racer: How do you like to drop the washers in the grass, at night ? Don't remove them ! Most karters run +/- 1.5" stagger. You wanted to mount a new LF tire and it came out 1/4" bigger or smaller. SAVE IT ! Put it in the rack. Instead of fighting the washers, change the tire ! Now you're changing the height of the frame AND THE SPINDLE ! lol ! I use the same size tires on the left side, so I keep a rack of them in 1/8" increments. Drop them washers and you won't make the second practice. Change a tire and you have time to check the car over. If you need more change, change the tire again.