All consumer sets are built to overscan. They are not regulated
so the B+ can vary a lot at different times of day. If someone
saw the width come in they would think it broken. Also keep
in mind what you are feeding it, the width could be OK but
the source cutting it off.
Almost all Zenith B&W's had a width sleeve A.K.A. lin sleeve.
Also if your yoke is "standard" you can get a cover off a
NOS or old one that has a screw.
73 Zeno
