What have u guys been doing on the initial break-in with these? I've always run an oem wear ring. The liner on mine fits so snug that the impeller doesn't spin without considerable force. I know a tight gap between he impeller and ring is good but this is too tight. I thought I've read of peeps trying to let the impeller "seat" itself on the ring but if remember correct someone posted that the friction between the two surfaces caused the new plastic liner to warp and be trashed. I've sanded it some so that it spins with less force but there's still quite a bit of drag on the prop. Experienced suggestions welcome.