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[Splitmore]

Slateman,
Carpets usually don't show much interest at all in pinkies,they seem to prefer a fuzzy size mouse that is just starting to grow some fur.
Unfortunately this time of year you also have the seasons against you,alot of snakes are off their food regardless of the temperature they are being kept at.Rat and mouse tails would have next to no nutritional value at all so I'd really be trying everything possible to get them all onto fuzzy mice.
Keep them seperate, warm and in a relatively small plastic tub and try leaving live fuzzies in with the snakes overnight and see how you go.
Regards,
Splitmore