Help with If statement

The whole document works but the last one i need. I'll post it all just in case i have an error elsewhere.

Start Time -- Stop Time -- Break -- Total -- Hours Worked -- Average -- Pay
6:00 -------- 3:00 ------- Yes ---- 1600 -- 8.00 ----------- 200 ------ $xx.xx


E2 Formula for time: =IF(C2="Yes",(((A2*24+12)-(B2*24+24))+1),((A2*24+12)-(B2*24+24)))

F2 Formula for average: =D2/E2

and now for the problem one.

G2 Formula for pay: =IF(F2<165, E2 * 7.25, IF(F2<180, D2 * 0.07, IF(F2<190, D2*0.08, D2*0.09)))

Just to break that formula down more:
0 - 164 = 7.25 * Hours Worked
165 - 179 = 0.07 * Total
180 - 189 = 0.08 * Total
190+ = 0.09 * Total

it only calculates 7.25 by the hours worked no matter what comes up in F2