If your partial mash recipe only uses light LME or DME, then all you need to do is convert using the formula:
0.6lb DME = 0.75 LME = 1lb 2-row
If it uses amber or dark extract, then you're on your own since we don't know what goes into those extracts.
I can't be arsed to keep up this list of what's in the fermenters, but hey, check out the cool brewery I'm opening up!
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