When you say it spews the balls out of the tube what do you mean exactly? Out of the end of the barrel?
If it is the .22 version then the ball size is important.
I had trouble sourcing some for mine and in the end had to size some 5.5mm lead balls down 5.2mm
https://www.airgunbbs.com/showthread...d-balls-anyone
https://www.airgunbbs.com/showthread...own-lead-balls
Cheers,
Matt