My cups came with 1/8" tungsten diffusers. No problem, I have Furick spares lying around but it sucks having to throw away new cones.Also the threads were very tight about halfway which prevented the base of the cup from touching the seal.The vigorous back and forth movement of the bowl jerked a few threads but let them shrink completely. Both cups had the same problem. I used the original Miller 45V44 gas lens (2.4mm 3/32"). (Badly shaped strands?) All in all, it's not the end of the world, at least the cup is still usable. I will use Furick diffusers.
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