Aciera F4

This is my first post so apologies if I am making any mistakes or I am asking silly questions.

I have purchased a 'round head' Aciera F4 and I am in the middle of cleaning it currently.

I wondered if anyone could help me with the following questions.

1. I have taken the table off to clean behind there but I wondered if there are any other components I should remove and check or clean before powering it up.

2. Two of my rulers are stuck in their slideways, does anyone know how I can get these to move. I have tried a ton of WD40 and tapping it with a copper plate but no luck so far.

3. I would like to drain the oils in the machine and replace them. Does anyone know what oils I should be using and where.

4. The machine has a number of grease nipples on it but I assume these are actually oilers, is there a specific type of oiler can I should be using for this.

5. The automatic stops for the travel seem to be stiff in their bores. Is there any recommendation for dealing with these and can i take them apart o service them or is that a bad idea.

Thanks in advance to anyone able to help.