Hello Hervé
Welcome to the forum. Also live in France (SW) and owned a 2002 S1 Aero for 10 or so years. Is your's an S2 or S3?
Plenty of good Aero knowledge on this site though I've not heard of someone wanting to raise the seat. During my ownership I found most jobs that I tackled reasonable to do even if at times they were lengthy... In some cases limited space to work with spanners so having a good quality 1/4 inch drive socket set along with short ratchet spanners is very useful.
Enjoy your ownership.
Cheers
Philip
