Hey Christian let me strat off by saying your contrubutions to programing are astounding and your reputation proves it.
I've just read your HSS-100 program & have a few questions on customizing it. I am a devoted (by devoted I mean I NEVER miss a workout day) natural bodybuilder w/ 6 years experiance. I recently hurt myself & messed up my ACL (along w/ other things...) and cannot work lower body for about 6 months. Since I'm not working my lower body I figured it would be a good oppertunity to bring up lagging body parts. Which are proportionately my chest, shoulders and biceps. I've read your Back, Shoulder & Chest specialization articles but you say to stick to specialization for no more then 4 weeks.
However since i'm not working my lower body I figured I could customize HSS-100 to have less volume then your specialization programs but still more then your original program (for chest, shoulders & bi's). Do you have any advice on setting up this kind of variation?