do you find tuning a FR bridge to be a problem or do you want to block the trem? I didnt really get the question.
tuning FR bridge can do the old fashion way just tuning and tuning again until you get it right. if the bridge is not parallel, do the necessary adjustments.
however if you want to block the trem I suggest you use bring it to a tech so that he can use a piece of wood to block it up professionally.