[TR] Trunnions later TR4 with 3 degree caster

[Dave1massey at cs.com]

In a message dated 3/14/2008 11:08:51 AM Central Daylight Time, 
tr3driver at ca.rr.com writes: 
> >In addition, the 3 deg right and 3 deg left have opposite 
> >handed threads.  
> 
> I disagree.  The late TR4 had the same vertical link on both sides, so the
> threads could not have been opposite handed.  That changed with the TR4A.
> 
So are you saying the TR4 had different links than either the TR3 or the 
Tr4A-6?

Dave