You have got the timing 180 out. The cam pulleys have twice as many lobes as the crank pulley, so it takes 2 turns of the crank to turn the cams once.
If you look at your picture it will show you that when you fit the leads 4321 on the head no 4 is then TDC So when the rotor arm turns clockwise as in the diagram the firing order is 4231 whitch is the same as 1342.

Like this normal TDC 1342
90 out 3421
180 out 4213
270 out 2134
back to 360 1342