high power, power spliter/combiner

hi
I'm designing some high power combiner/divider for example wilkinson one.Because the divider is high power, I have to use high power resistor too.for this purpose I used ATC high power resistor.according to datasheet there exist some capacitance with this resistors and considering this value of capacitance the results will be very bad.Do you have any suggestion to overcome this problem?

What power levels are you talking about? What frequency? have you made the resistor the inner of a transmission line? Have tried moveable patches on your feed line? (adding a bit of inductance in series!)
Frank