Another Brushless CRT

I am going to get some diff oil this week and try to get the traction issue sorted out. It definately needs thicker oil in the center. I will try somewhere around 30 and go up from there if it still needs thicker.

Also, I cant seem to find firmer springs for the CRT. I have the stock blue (firm) on there now and can find only soft or med. Should I just thicken the rear shock oil or will I need a firmer spring too? I have 50/40 (FR) in my shocks now, would 60 be ok in the rear? 50?