Don't know what the OG of these dry kits would be but you could try making it up to 20 or 30 pints instead of the recommended 40 and take the OG with a hydrometer. I imagine you'd want it to be about 1050 to 1060 for OP. If the gravity is too high, add more water to get it to where you want. Upping the strength by reducing the volume is fine within reason.