Hi everyone. Can I get a little advice? My tractor will only run if I hold the choke closed, as soon as I let go or let it open too much it stalls. It has an inline filter and has a flomatic fuel pump on the line. I think it used to be gravity fed, but someone changed it and added the flo matic. I took the fuel line off the carb and turned the key to see if gas flowed and it did. Checked all sparks with tester, all sparks show on test bulb. Could something with the carb suddenly go wrong. First time I ever had to go this deep without getting it started. Like I said I could keep it running if I hold the choke all the way shut. I kept it running for a few minutes before I let off and it stalled. The bucket went up and down etc too while I was contorted to keep the choke shut. Do you think it's the carb or my flomatic is not working consistently enough to feed the carb. I changed the filter as well.