A current topic of great interest among linguists is the role of fine-grained phonetic detail within a phonological framework. A challenge in Optimality Theory (OT) is how to evaluate gradient change, as opposed to one that is categorical or contrastive. With specific regard to vowel intrusion in Spanish /Cr/ clusters, there is a current limitation in that OT constraints are constructed to evaluate only intrusive vowel presence and are not able to evaluate candidates that differ solely in terms of the duration of the intrusive vowel. The current study first discusses current gesture-based OT accounts of vowel intrusion and then resolves the current limitation by offering a set of constraints based on intergestural phasing relationships.