dist. mechanical advance ajustment?

anyone have any pics on how to take the dist. apart and reassemble?the plates look way easier,but I would hav to set my timing at 16* to get to the 34 if I used the 18* holes.

This is the basics even though they are showing a points distributor the basics are the same.
They say "lift the cam off" but in actuality you need to pry it off with two flat screwdrivers.
Note the roll pin location in relation to the rotor so you can put it back on the same way.

How to Rebuild and Reinstall Car Distributors

This is another good source.
https://www.hemmings.com/blog/article/the-lost-art-of/