My 1998 wideglide has a motor bad motor vibration from 1500-2000 rpm's runs good the rest of the time? bad motor vibration from 1500-2000 rpm's.runs fine the rest of the time?

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Hi Charlie, and the usual suspects are:
1. Wheels and or tires unbalanced, worn or damaged.
2. Engine/transmission/vehicle not aligned properly.
3. Primary chain badly worn or links tight as a result of insufficient lubrication or misalignment.
4. Engine to transmission mounting bolts loose.
5. Upper engine mounting bracket loose.
6. Ignition timing incorrect/poorly tuned engine
7. Internal engine problem/ flywheel shift runout should be .003" max.
8. Broken frame
Good luck and have nice day.
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