Recheck your midrange needle and, make sure it is flush (they back out by themselves). Also there is no way for anyone to tell you what to set your needles at because all engines are different and, air temperature is different. But i'd say to lean out the lowend a little more and, see how it runs, you may also need to lean the top end a little - 230* race temp seems cool for being on a it all race.

One test to see how lean the low end needle is is to pinch off the fuel line while the truck is running and, "cleaned out" and, see how long it takes to die. If it dies very quickly after you pinch the line your lean, if it runs a few second and, dies your close to right and, if it runns for 4 or more seconds you are rich on the bottom. this is a general way to ball park the LSN and, may still need a "tweak" from day to day and, race to race.