[TowerTalk] Yaesu thrust bearings

[cqtestk4xs at aol.com]

After using TB-3 thrust bearings for years, I'm looking into the Yaesu ones.  Usual problem with the TB-3s..over time they develop flt spots and cranky rotation.
I'll be doing swinging arms  and for most antennas.  Yaesu makes two I'm intyerested in:  YAESU GS-065 65MM and the GS-680U.  Other than the second is supposed to be self aligining, are there any difference in strength, durabilty etc.
Bill K4XS