All,

I received many answers, of which some off line, and I want to thank all
those which gave me their councils.
It is necessary that I choose for the proposals are sometimes
contradictory!!
I at least retained that it had well to be made sure that the tailpipes
cannot touch the fuselage in spite of the vibrations engine, that the
junctions can slip according to the temperature.
I of course will apply these councils and I will also choose by a support
for the level of the firewall.
The causes of my troubles not being clearly identified, Snowline proposes to
change the section  under guarantee
If there is no more news of me (on this subject) on the LML it will be good
sign!

Patrick

L320 F-PRKI