Anne ,
I have had no direct experience with a 409 but expect it will be the same as the 411 .
The top of the 411 front coil springs are located in a tubular sleeve of the front cross member. Between the cross member and the spring there is polyurethane type spring pad which I assume softens the ride .
When I bought my 411 I though the springs had sagged but found the polyurethane spring pad had started to disintegrate which lowered the front of the car . I replaced the spring pad with aluminium which raised the car to the original height and did not effect the softness of the ride .
This was done about 25 years ago and the car is still sitting at the correct height , with the original springs .
It is worth checking it out before considering new or retempered springs
Geoff D
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