Where to buy Sachs fork & shock springs???

[Zrt1200]

Last week we picked up a 2010 EC250 for my boy as his YZ250 is not the best woods bike. It works but its not really a woods bike. Anyways the suspension was set up by Les at LT Racing for a 180# rider from a previous owner. I talked to Les when I rebuilt the forks about what oil I should use and where to set the clickers for my boy who is 150# in street cloth's. I soften the spring to get the correct rider sag but the static sag is out to lunch. We took the his new to him bike out Friday & Saturday for his first ride on it in the woods. He tells me he really really likes the bike and its better than he expected but the suspension is stiff for him which is no surprise to me. Anyways we need to pick up some softer springs for him and other than calling Les at LT racing I have no clue where I can get fork & sock springs. We need a set of 48mm .40 fork springs and a 5.0 shock spring. Any help would be appreciated.