Shutdown, clogged nozzle

One day after setting up the boiler (cleaned fire side, new rayon pre-filter, same old spin on filter, same nozzle from March, 2008) the boiler shutdown. I reset it and observed a very weak flame. I diagnosed the issue as a clogged nozzle. Tomorrow I will buy a new felt pre-filter, a new spin on filter and new nozzle) and install them and reset the boiler. Below is a picture of one day's worth of operation on the combustion head (I cleaned it thoroughly yesterday).



Here is a picture of the back of the combustion head (I did not clean this yesterday, it hasn't been clean since March, 2008).