Kitchen Sync issues

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I am hoping some one had done this before, I have a A2000 with Toaster, I am using a Kitchen Sync (KS) to sync the input to 1, and 2. I have another KS that I would like to use for 3, 4. I think it requires a cable. Can it be made, or ?:confused:

It requires an additional daughter board on one KS:

http://www.amiga.org/forums/archive/index.php/t-41039.html