Isaac, Bosendorfer uses Renner actions. I once repinned a complete Bosendorfer action after trying various lubricants. The repinning was the solution recommended by the Renner factory. I repinned with same size that came out, after filing the bushing. (ofcourse sometimes I filed to much and used a thicker pin) Let them run as loose as you dare, but without sideplay. The touch will greatly improve, as will the repetition speed. I am curious to know the age of this 'Imperial' because these problems with Renner flanges seem to occur in certain periods. Succes, Frans Sedee
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