My 98 FLHTC develping high pitched squeal in primary. Consistent w/ speed of bike / not necessarly rpms. Stethscope showed a slight grinding in area of tensioner but no squeal when not moving. Recntly removed primary cover due to rattling, adjusted chain (was originally little loose) to no more than 5/8" slack in tightest section of chain (7/8" in loosest) while cold. Found comp nut tight, no obvious signs of abnormal wear, etc in motor end or clutch end. Cleaned sludge off Clutch hubs. Rattle reduced to next to nothing, but now squealing 2 weeks later. Diminishes w/ clutch pulled in. Plastic tensioner has wear (70k miles) w/ rough areas 1" long where chain rides, rebuilt tranny 20k miles ago due to "warranty" bearing and seal replacement in which bearng pin was inadvertently left out by mechanic. Now have primry cvr off, all fluids drained from everything (no metal), waiting for wrenches to where I'm stranded to pull chain, comp nut and clutch hub for better look at everything. Clutch plates (steel) look good, friction plates not abnormally worn (may replace anyway). I use Primary fluid from Drag specialties (always have). Could use a fresh perspective while I wait for the "big" sockets. Any ideas where I should focus first? Thanx!