I read this somewhere (can't remember exactly where). Maybe it'll help.
CTF + PKM gives all long tails with CT showing and PK geno.
in the F2 do a back cross with the PKM to give you 50% PKCT with varying CT degrees and 50% long tail CT. Then do a sister brother cross in the F3 gen to get 25% poor PKCT 50% half decent PKCT and 25% of the perfect PKCT.
