Can 17-012 be used with 3/8" diameter balances?

A quick learner from Montreal, Quebec says:
We are looking for a bracket for a 3/"8 spiral balance that would allow us to attach a balance to the top of a meeting rail as per sketches.

We have noticed your 17-012 bkt but it is defined as usable with 5/8" balances.

Could it be used with 3/8" balances?

The hole closest to the hook comes in handy to, we feel, prevent the bracket from bending under 13# of pull by the balance although it would be screwed on the top of the meeting rail.

Now, since the "t-bar" on the balance is located away from the rod's end, how far would the rod extend from the underside of the bracket as we have 0 tolerance there.

We have attached sketch of our intended installation, tested installation on site and "t-bar" arrangement by Caldwell.

Do you feel we can get away with this , as said, since we have no room beyond the bracket.

If in doubt could we be granted with 2 sample brackets that we can test.

If favorable, we would require 600 brackets. Do you have in stock?

Best regards,

Jacques
A customer submitted photo of a sketch.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting, Jacques. Based on your description, it sounds like you may have our Series 400 spiral balance. In that case, please take a look at our 17-030 and 17-031 brackets, which are similar to the 17-012 but made for use with the Series 400.
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