LED advice needed

I have been experimenting with LED lights for my turn signals and have not been able to finalise this yet. Whenever I change both rear turn signals to LEDs everything works fine. However, changing the front ones to LEDs as well will cause hyperflashing. So, as suggested by the supplier and other places on the web I added two (one on each side) 3 Ohm - 50 Watt resistors to the rear LED bulbs to compensate for the reduced load of the LED bulbs. Despite this the hyperflashing still occurs. The 4 way flashers always work correctly regardless of the bulb type.

In order to get this resolved I was hoping that one of you would have the experience to give me some advice.

Thanks.