'65 ball joints

[<Fnnutz@xxxx>]

Hi folks,
Can anyone please direct me to a source for new arm and ball joint packages for my '65 NY'er( same as 300L)? I replaced both sides about 3 yrs ago with new parts, from a well known seller of suspension parts in NJ. The new right side ball joint was too sloppy after 10000 miles to pass inspection, so I put the 'old' one back on. Now, the left side had bit the dust, after about 15000 miles. I tried NAPA, but no dice. These parts are # 2525450 (right) and # 2525451 (left).
Maximum axial play according to the service manual should not exceed .050". These near new ones have near a quarter inch of slop! Allegedly made in Canada.
Any leads appreciated ......
Dave in New Zealand.