Those X-Arcade sticks are known to have problems with a lot of converters, and in general the parts are considered crappy. You can search on the Shoryuken
forums and find a lot of complaints about them (as well as a load of info on other sticks if you feel like doing some research).
If your arcade isn't too far away I'd just recommend you just play there for a while until you can save up to get a nice joystick. You'll learn a lot more playing with other people, plus if you can find out what kind of sticks they use in their cabinets it'll give you something to compare with when you decide to pick out a joystick for yourself (unless you already know what kind of sticks you like).