CRF70 carb questions

Hello DTT masses, I was over to a buddies last night to help with his sons CRF70. It was pissing gas out of the overflow so we suspected float adjustment. First thing I did was measure it, it was within spec, so I removed it and the needle and low and behold there was a small spec of dirt in the seat, toothpick and carb cleaner, out comes the dirt, re-assemble no more peeing of gas, fired it up rode it around a bit, seems good.....but after it warmed up I couldn't take the choke all the way off or it would stall, it would idle, but as soon as you tried to give it gas it stalled and died. If I left the choke on just a little it would run just fine, So something is out a bit. My question is could it be the float or should I look at the jets for more dirt etc?? I will be going back over later this week to help finish tuning it.

Thanks in advance. I will also be googling and checking bike specific forums but I find the folks here usually the best help.

Maritime

pull the pilot jet make sure it is clear, tiny hole ;
clean screen at petcock if there is one
set float correctly
and make sure there is some kind of screen or filter between the carb and tank
popa willie

Thanks. After finding the dirt in the seat I suspect more. I did set float to spec. I'll check pilot for sure and suggest an inline filter for the fuel. then we will be doing wheelies ;D