Distance problem

[gray element]

I got my mag to stop leaking, HOORAH!
However, now when i fire it, the paintballs don't go nearly as far as they used to. Im not good with measurments so i can't tell you how far they are actually going but they are going a lot less far than they used to. I turned up the velocity and that really didnt do much except make my paintballs curve. Can anyone give me some advice on this?
Your responses would be greatly be appreciated. :)

[Dayspring]

Change paintballs...

[Maggot6]

Change paintballs, yes that makes sense for the paintballs curving..Are you sure your barrel is shiney and smooth? AS well, when you were tyring to stop make it leak you probably messed around with the velocity ajuster...Check your local feilds Chrono to make sure...