engine tuning ?

[3speedlightning]

when i start my nitro engine it idles ok......but when i mash the gas the thing boggs down & allmost dies for a second or 3 then it picks back up.........do i turn the high end or low end needle to fix that & if so, which way do i turn it ? richer or leaner ? all the o-rings are new, fuel line & tank is new, new air & fuel filter, engine carb & backplate is sealed too........no air leaks anywhere so i figer it has to be the needle setings but don't know which one or which way to go with them.....the engines about 6 week old & had 1/2 gallon of hpi 20% through it.....

 

[Xjeepguy]

It sounds rich, but it is hard to tell without seeing it. I would start by turning the HSN 1/8 turn clockwise and see if it improves. If it does, but still bogs a little turn it another 1/8 turn until it clears up.

If it gets worse, the turn it counterclockwise until it runs right. I would bet it is rich, but you are gonna have to tinker until you get it right. don't mess with the lsn until the HSN is set right.