[Kenwood] TS940S VFO Shaft Lubrication?

[Michael Tope]

I've got a SN904xxxx TS940S with sticky VFO shaft. The shaft rotation drag is very high and independent of the encoder shaft tension screw position (i.e. tension is the same whether the drag screw is fully tightened or fully loosened). I am thinking that the lubricant used by the last person who serviced it (back in June 2004) has probably gunked up. Any recommendations for a lubricant that won't gunk up quite so readily? I got a couple Google hits which suggested Tri-Flo. Is that a good choice? 

Opinions?

Thanks,

Mike W4EF...................................................................