I wish to know if anyone is currently using the S.P.E.C kits on the ScubaPro MK20 1st stages (or similar "environmental protection" modifications to any regulator), and if so, do you really think it's necessary? I use "unprotected" MK20's in cold water and have only ever had icing problems with the 2nd stages. Is the probability of a 2nd stage failure great enough for the survival probability increase of a modified 1st to be negligible? Any comments or questions? -Sean -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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