What was found
OWNER COMPLAINED OF ROUGH RUNNING/MISSING WHEN ENGINE HOT WHILE AT LOW POWER SETTINGS. RT MAG (4150) REMOVED. EXCESS PLAY IN DIST END BEARING (APPROX PLAY, .030 INCH) SN 9010274. LT MAG REMOVED (4151) SN 9010270. FOUND ENTIRE INTERIOR OF MAG CONTAMINATED BY GREASE FROM DRIVE END BEARING. THESE MAGS (4100 SERIES) ARE NOT REBUILDABLE AND SLICK SB RECOMMENDS REPLACEMENT AND TIS TO BE NOT IN EXCESS OF 800 HRS. ENGINE TT: 494 HRS SINCE NEW.