you can work your grip on a different exercise that won't cause failure of an exercise "intended to work something else". If the point of the Chin ups is to work your lats and you don't work them...then why bother doing that at all? If the point of RDL is to work hams and glutes and you don't because you can't hold the bar...the exercise is worthless. Why not just do a plate pinch or something at the end of your workout? Why waist time setting up exercises you can't accomplish? Why justify doing an exercise that isn't working what you want it to work? That makes no sense.
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