Trouble with stuck starter valve

HI. Does anyone know how to remove a stuck starter valve in the carburetor. The Choke cable has not been working. I had been just getting by. Now I want to overhaul the carburetor but I can’t seem to get that starter valve out. I ended up breaking the cable loose from it, then tried to use long nose pliers to pull and turn being careful not to damage the threads on the side. I sprayed deep creep hoping it might loosen but even the deep creep did not flow down. Does anyone have any suggestions. I have a new starter valve kit and a new choke cable along with a carburetor overhaul kit. Please help if you have any suggestions. Thanks for your time. I have a 2004 trx400fa. This is my first post. :icon_ peace: