(xjr100) - Front suspension, springs,

I just recently joined Jag-lovers and am trying to source front springs for my '02 xjr100. We properly replaced the shocks all round, along and rear springs 2 years ago, now I’m drooping in the front - any thoughts please ?

Sometimes it can be the shocks, I replaced the old shocks on my XJ40 and the front came up about 20mm

I would have made the same assumption if we hadn’t replaced the shocks 2 years ago - certainly possible I got hold of a bad set of 15 yr old shocks - guess I’ll let my old jag serviceman take a look
Thanks a lot for the response