If I remember correctly V2 did not use JCMs.

I would double check that the Bikini is grouped to match the grouping of V2, i.e. that the collars of the Bikini closely match the collars of V2 etc.  If not you should regroup the Bikini groups to match those of V2 more closely.  Then I would check and adjust the Joint Parameters.

BTW, How did you created the morphs for the Bikini?  Did you actually create matching morph in the Bikini with magnets, a modeling program or a 3rd party utility such as Morphing Clothes?  Or did you just copy the morph data straight from V2, in which case the morphs will not work for the Bikini.

Chris Cox