Primary Clutch Springs

Hey guys, I have been doing some research on springs the last few days, found afew threads, and then I sent a email to renton coil springs, actually I sent one last year to, but I'm not getting a response..... I have also been cruising the Cutler performance site, seen there purple/white and gold/white springs.

Here are my questions to you,

Is Renton springs that hard to get a hold of... Do I need a letter from God...

And has anyone tried the Cutler springs?? Do they hold up??

I currently run the boondocker spring, painted black, no idea what it is, maybe someone can chime in and give me the specs... guessing 140/320.

Thanks in advance
Ken

Thanks Likkerpig, I'll check that out when I get this mornings inspections done.