Me again, motor help this time

[Snooky]

Hi all,
So my second hand B4 seems to have munched the bearings in the motor; It's a Reedy 3300. I can get the end cap off but I have no idea if the bearings are replaceable (is that a real word?) or how to do it. I have read conflicting reports, some say they are, some say they are not. So if they are replaceable, does anyone know where to get them, and if the are not, what is a reasonable replacement bearing in mind I am on a tight budget as my divorce solicitor keeps sending me lovely letters and bills ;-)

Cheers,
Snooky.