How much setback do you have. I have a 300x motor on my DCB and can spin a labbed 30 in cool weather with a light load. I spin a labbed bravo 28 all summer and it runs pretty good. 85-86. Your height sound pretty good at a 1/2 above the pad, i have about a foot of setback and thats where i run with 16-17 lbs of water pressure at WOT