I bought 5 Calus Mini-Tools from Xur a couple weeks ago, enough to unlock the pattern. So I used 5 of my harmonizers to get them red-bordered, then dismantled each one. Now, I'm sitting at 4/5 pattern progress on the Calus Mini-Tool and I'm missing a total of 5 Deepsight Harmonizers.
I created a ticket with the bungie community support team, and they told me they didn't have the kind of hands able to investigate this issue. I am currently open to suggestions on either how to get that Harmonizer back, or a Red-Border Calus Mini-Tool.
And yes, I know I have 6 Harmonizers a season, but with a long season ahead of me, I really wanted to save that one for something special, or an emergency.
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The only way without using that 6th harmonizer would be to do Presage. Normal and legend give a guaranteed weapon deepsight on first completion and then you can farm the activity to possibly get the drop