Nothing wrong with castor 927 ,I've ran it before on my R and banshee,but I switched to klotz super
I've found 927 to seperate in the heat of California
My uncle runs clear lines on his banshee and it sat in the garage all summer ,winter came
Usually when my sits ,ill shake the bike before starting ,he didn't and when he turned the pet cock switch the lines turned pure 927 color
Seemed to me that the fuel seperated from the 927
And it was 110 race gas