Einstein Attribution counting non-valuable touchpoints

Hi all!    We've been using the Einstein data-driven attribution model to capture campaign influence from our activities. This works great for us usually because it associates a nurtured journey to second named contacts at the same account who actually have the opportunity attached.    Today I noticed that a campaign with one form and no completions had received campaign influence because of a form view. We already exclude email opens by way of attaching these to an excluded campaign, but ideally we don't want to do the same for forms.    Am I missing something? Is there a way to exclude particular activity types from creating campaign influence records? I'm already filtering the auto-association settings by saying the member status must be Responded and the first associated date cannot be blank, but records are still showing in our reporting.    I've looked at filtering this on the reporting level too, but since Campaign Influence to Campaign to Campaign Member is a many to one to many relationship, this hasn't been done. It seems as though the next option is to develop a custom Ajax procedure to create the fields to exclude this.    Has anyone found a simpler way? Is there something I'm missing?    Cheers all,  Alex