I would not. I would just make the bow. BUT, how I would advise YOU would depend on your tillering/timing knowledge, experience, and techniques.
If you expect to be near certain results and effects after tillering to predetermined brace height measurements... i.e. 1/8" positive tiller, then yes, I would advise you to heat and bend one of the limbs to match the other in side profile. (Not preferred).
If instead you hold the bow in the tree the way it will be held when shot, tiller the bow with limb timing as your guide and goal throughout the process, and let the brace height measurements be whatever they be, purely a result, then there is no reason to change the side profile. (Preferred)
Actually, the latter is the method of tillering I prefer regardless of whether the side profile of the limbs match or not.