[UK-CONTEST] Rotators, Grease and Yagi's

[Adrian Rees]

Hi all
 
Bit of advice from you seasoned contesters...
 
I am building a 14MHz Yagi at the moment, and want to make sure that the electrical connection between each length of tubing remains good. (Each element is made up of 5 different sizes of Ali tubing, nesting inside each other). With that in mind I thought conductive grease ? 
 
The second grease question is what grease would you reccomend in greasing the bearings in Rotators and Thrust bearings ?
 
Thanks 
 
Adrian MW1LCR