<<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
>>
Pine,

The manual that came with the fast build kit shows the front to back level
reference as the longerons.  With the fus inverted it should be rested on
two sawhorses.  One under the forward longerons and one under the rear
longeron.  You can use a water level to check the front to back level and
shim as necessary.  The side to side level can be measured on the front
longeron underneath while the fus is inverted at the FS position where the
foam blocks (main spar spacers) are attached to the fus.  The only thing the
firewall is used for in the FB manuals is to find the center string line for
the fus.

I haven't done any of this yet, but have read that section of the manual
about 10 times and this is my understanding of the process.  I hope this
helps.

Curtis Krouse N753K