Took me about 40mins to do a lowers service on my 100mm Laurins, and that was being very careful. Really very easy to do.
Couple of bits of advice gleaned from those who c*cked it up.
Of the two lower leg bolts, one is hollow (the rebound side). Don’t bash that to release the lowers. Instead use the solid bolt from the other leg (once that leg is released). Hollow bolt is apparently easy to shear off and probably very hard to replace.
Buy an oral syringe from your local pharmacy. They cost pence and make squirting oil into the lowers much easier and less messy. They also make squirting oil directly into the foam rings very easy. I saturated the foam rings without even having to remove them.
I personally added 23ml (the max recommended) 5wt synthetic oil to the air chamber. Just remove the top cap with a spanner and squirt it in (let the air out first!!) I was struggling to find the sweet spot between small bump compliance and bottoming out. Adding oil reduces the air chamber volume and makes the travel more progressive. Made a huge difference.
I was very impressed with the seals – 12 months of twice-weekly night riding and the foam rings were still like new.