I currently have an 02 XC800 with the slp single / Air horn / Flow Rites / Tempa Flow

I'm running Dalton Pro 70 Grams with a Polaris Almond Blue in my primary and a Polaris R12 (50/36) with an EPI Black Secondary in the second hole. With my setup would you stay with the Black EPI Seconday spring or try a softer Polaris Silver / Blue Spring? Has anyone tried my setup with this secondary spring? Just wondering what the difference would be.

Anyone?

If you are geared close to stock, I doubt it will pull it. The only way to know is to try it. You could gain by switching out that R12 for something more aggressive, 38X, or dalton P52/36.

I have not had good results with the EPI Black driven spring, except with it on the more agressive helix's. With R-12, you should get by with the Blue or silver-blue in the 2nd hole, if it is a little to "soft", then try the 3rd hole.
EPI black with the Dalton P52/36 should be a very good combo, I tried it with a P50/36.