Pickup height adjustment

I'm working on my parts bass (warmoth) and I have installed Sadowsky P/J pickups. However, the J pickup is super tall. The foam that Roger privides is probably going to be too tall. I cut it in half, but now I don't get much adjustment. On the P side, the foam is not tall enough as the pickups are much shallower. What do you all use for this? I've thought about using springs, but I'm not sure where I can get them. Has anyone run into this problem before? Has anyone notices that the Sadowsky humcancelling J pickups are monsterouly tall? thanks in advance!