Well, with a 3d program, if you notice an area of poke thru on a morph you'd need to exprot the morphed object and  use a soft select mode to select and adjust those area where there is poke thru. THen you can use the "fixed" object as a new Bodybuilder morph for your clothing.

If you use the Morph tool in poser you basically select the areas of poe thru and "pull" or "push" it until the poke thru is fixed the morph tool has soft select and sizing options too. If you selected make new morph when you started the morph tool it will automatically create custom morphs in the clothing so you just save the clothing with the new morphs in it (change the name if you want0 and they will be there the next time you open it.

I;d suggest checking out some of the clothing creation tutorial, the techniques used to create clothing are about the same as needed to fix adjust morphs.