advice needed

[rsb]

I have just got my bike through the mot and some C*** stole my indecator lenses. So i went a replaced the rear indecators with a new set. Now they flash too fast. Now i know this happens with LEDs but my new ones are bulbs. Both bulbs work so none are blown. The problem is probably the fact that my bike is a grey import and the original bulbs are bigger wattage. Unfortunatly i cant get that wattage in the smaller bulbs for new indecators. So is the soloution for this problem a case of just fitting a pair of resistors? if so what size? im really stuck please help.

Thanks in advance

Rob

Honda Bros 400cc 1989