Longer shackles changed the pinion angle:
- http://www.4crawler.com/4x4/CheapTricks/Driveline-101.shtml#Single-Cardan-Measurements

But try pulling the shaft apart and brush some grease on the slip yoke splines. It may have pulled apart a bit and might be dried out there. Also, check the u-joints for play or tightness.

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
4Crawler OffRoad - 4x4Wire discount code