Note that their is are two versions of pre-katadyn Nova's. The first generation has a 5mm bolt, attaching the burner to the stove base. The bolt is effected by the heat and when you use to much force to turn the nut on, if might break the bolt.
The second generation uses a 6mm bolt and a brass nut, which has no issues of things breaking off.
Yes, good point. The latter version, the 6mm, definitely has the better reputation. Hopefully, there aren't too many of the 5mm versions still around, but if you buy a used Nova, that size is something to check.
HJ
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