No if you have 6LF and 10RF that is actually a little low for dirt. A smaller split could tighten the kart up some on entry . By less split I mean adjusting the LF to 8 and leaving RF at 10 there would only be a two degree split instead of the origional 4 degree split. I think a better adjustment to tighten entry would be to increase the cross.
So that kart has lead adjustment in the front end that’s why the second/forward mark on the LF is at 13 so I’m assuming the LF L block is in the rear position which is good. And the RF L block is 3 on that second line which I am assuming is the back/rear line because the L block is in the forward position which is good also.
6LF and 10 rf is a good starting caster point for asphalt and even dirt if the conditions are right. Caster is more of a fine tuning adjustment that controls timing. Most effects will be felt in the center of the corner most of the time. The strategy I normally use is to adjust cross for corner entry and rear stagger for corner exit. Then use caster to adjust rotation in the center of the corner. With a champ of any kind or brand over the years I have never had any luck with high cross set-ups asphalt or dirt. Probably always been in the range of 48% to 56% cross.
For rear track width on asphalt. Run the LF as close as you can to the spindle arm and square/ align the LR with the LF. I use a level. Then set the RR out 1” farther than RF for alignment this will set your rear track width. Depending on axle length in your kart you may not be able to achieve this get as close as possible. It will be way different than where you run the rear hubs on dirt.
Make sure you are running a 4.50 or 5”, whatever width an EL LF tire is, on the LR for asphalt. Hope some of this helps.