[TR] TR3 liners

[Randall]

> Preparation
> time is a few hours, 

Man, you guys are optimists!  First time I pulled the front apron on my
TR3A, it literally took me a month of Sundays.  There's a whole bunch of
bolts that have to come out, and they have their threads exposed to road
dirt, mud and salt; with the nuts in areas that are difficult to reach at
best.  I wound up only torching one bolt, but just the repair from that took
more than a few hours.  

Today I'd probably grind the head off instead, and then replace the captive
nut once it was apart.  Still not a quick task when there are more than 20
bolts involved.

Randall