The seats on my 306 are giving me back ache- very weird for a Peugeot! I am finding the lumbar support is too much and is causing me lower back pain. I had a look in my handbook just now and it seems that my 98 XSi does not have adjustment for this. Is this only available in the GTi6? I have tilted the backrest back a little, did have it totally upright as I have have shoulder problems and need support there.