did some more research.. looking at moncha's review of the flashers and the website. it seems that a 6ohm resistor will only make up for one of our turn signals going to LED.. a 3 ohm resistor will account for 2 turn signals (front and rear).. so if you put a 3 ohm resistor in the place of the 6 you have there... should take care of your problems
the capacitor that controls the rate of flash of the turn signals is based on the current through the circuit. the current through leds is much lower than through the regular bulb. a lower current with the same voltage gives a higher resistance. to lower that resistance you add a new resistor in parallel with the lights.. resistors in parallel effectively lower resistance.. so by decreasing your resistance you increase the current through the circuit.. causing the capacitor to discharge less frequently... i think