Yes I guess that makes sense if the TRE Abuts the Extension Tightly, I was visualising in my mind and thought there woudl be spare thread at the TRE END.

As mentioned by others. I would probably be inclined to add threadlock just incase.

Only an hour to do 11 miles... It took me an hour to do 4 miles just before christmas. A journey that's usualy 10 minuets.

TT