Baer Brake rear standoff question

[Ron West]

I have a DSE rear axle with quadra link. I'm putting on my Baer Track Plus rears but it seems the spacing for the caliper is off.
You can see the gap where the (first thread has started only) to hold the caliper for this pic. If I shim it it makes it further away. I need the bracket to move closer.

What should I do? Thanks in advance.