a little help needed, hopefully somebody still has a 400 or remembers this from their yz400f. I have a 99 Had some work done by a place a while back on my bike, they were doing some jetting work so I had them put on a zip ty fuel screw. Screw needed to be 3 turns out to get it to run properly, so used it for a while but is was so loose I did not like it (actually had to put a small piece of tape from the screw to the carb body to keep it from coming out) so after dealing with this for a while, I said screw it I am putting the stock fuel screw back in. well I put the stock screw back in, but from what I remembered the bottom of the fuel screw did not come out of the bottom of the carb, but now it comes out by maybe 1/8th of an inch. This is the original FCR carb, does anybody know if I have to remove the bottom of the carb to get the fuel screw seated properly? I'm thinking maybe there is another set of threads that the carb can grab the screw, but it is not the proper place it is supposed to be. if anyone has an idea please let me know, thanks.