If by sticking you mean it doesn't change views, that's the single most irritating problem with Saitek sticks and is the major reason I stopped buying Saitek products. There is no way to fix it without sending it in for repair because the switches are teenie-tiny switches mounted to a PC board.
Your choices are the same as mine were...
A) Keep a spare on hand to rotate out when the other is in for repair (I did this for years)
B) Buy CH (I just did this a little while ago)
Edit: Taking apart the X45 shown was an adventure in and of itself. I'd imagine the X52 is the same way.