Just a couple of tips:
I need to start earlier in the frame to catch ALL of the WOT
You really need to increase the time per division (Top left of the screen). At the moment you have it at 500mS (a total of 5seconds across the screen), which is a bit short for this type of capture. Try increasing it until you are sucessfull to capture what you want.
If you want to get fancy, try setting up a trigger (Bottom left).
I need to reduce the noise on the waveform
I cleaned up the signals in the file by changing the bit rate
Personally I don't like to use the "bit rate" to tidy up noise. You are better off ticking the 'activate filtering' in the 'Low pass filtering' (available in the same drop down menu as the 'bit rate'). then adjust the amount of filtering up or down.
But......The lower the number the heavier the filter.
Far more flexability than 'bit rate'.