Channel Balancer

I have a few broken channel balancers. Width is 9/16.
Shoe depth is 1 inch.

Stamp on item 1 is 24 - 2. Stamp on item 2 is 28 - 1

Both upper guide and lower shoe , non winged.

Would appear series 351 is matching model required, a 25 inch version with option 24-20 for item 1, and a 29 in version with option 28 -10 for Item 2. Would like confirmation and /or recommendations. Thanks !!