44.2 shock advice

[Tobamory]

Ok so im new to this building lark, and wanted some tips.

What do you use to clean shockoil from the shocks, will washing up liquid be ok, or should I really look at some mechanics spray ?

Next thing is when I built up the shocks I noticed 2 things

1. the bleed hole washer once covered in shock oil wanted to squeeze out when I tightened the screw ? any ideas

Also on the shocks themselves there is a small rubber o ring when that's also covered in shock oil it tends to bunch up.

And what do I use to tighten them does the kit come with anything or do I just do as tight as poss without marking the shafts ?

thanks