As mentioned before recently they can be taken apart fairly easily,plates cleaned and soaked and put back together. Most of the time for me though they will break free with a good engine warm up,getting some hot oil going,gentle rocking in gear or tying the clutch handle to open for awhile also while working on other things. Just broke a 71 750 free recently for a guy that was sitting since 85.Not a deal breaker by any means.