That's awful! I just went round and round with the plumbing on a Sicce to replace the return pump in my 90. After Lowe's, and Home Depot, and several calls with BRS (along with them sending me a few barbs), it was discovered that the barb Sicce says is 1" is really more like 3/4". I finally gave up and returned it.Well learned an expensive lesson, the smaller Sicce Synca pump that come with only the barbed fitting with o-ring cannot be used with NPT fittings. I put some pipe dope on the fitting and screwed them in and the next day its almost like the dope broke down the plastic and the threads where getting eaten up. $170 paper weight