+1 on TG. Our Calfee is a year old, not quite as old as yours. I sweat a lot too. So, when I tore the eccentric down about four months ago to replace the standard bearings with ceramic, I had to clean out a lot of corrosion before I re-installed the eccentric and bearings. I re-installed with TACX assembly paste. Calfee also recommends torque values on the two retaining bolts to be 14-17Nm. I originally had them much too loose.
The eccentric generally doesn't move, although we are now at Lake Tahoe and doing a lot of climbing. The eccentric rotated, and thus tightened the chain a bit, but was still smooth when I loosened the bolts to put more slack in the chain. I suspect there is very little (if any) corrosion penetrating through the TACX.
Hope this helps.