Datamarine link 5000 wind instrument
In 2010, when at the top of my mast cleaning spider webs and inspecting the rigging; I sprayed lubricant between the wind cups hub and the housing with WD40. Now one year later, the wind cups do not spin in light air and register about 2-4 knots slower in heavier air. The wind instrument was rebuilt by Datamarine about five years ago and have operated accurately until this year. I suspect the WD40 may have caused the problem and may not have been the correct lubricant or no lubricant should have been used. Has anyone had this experience? Any suggestions on how to correct the problem?