As in all of life finding your unique ability lies in identifying those things that are easy fot you and difficult for others! Palp sent me detailed instructions that I will share-- not yet sure if I can do this without f-ing up the stem- this is from palp.
here is the description of how to install the crown (you can however ask The Zigmeister too for help if you are in US...):
open the case with a tool or duct tape (method described on the repair forum somewhere). then you find a small release screw right next besides where the stem goe sinto the movement. loosen this screw a bit, but be careful: do not loosen the screw to release the stem more than 2 turns (1,5 turns usually is enough to pull out the stem) otherwise you have to disassemble the dial and fix the keyless works. just screw a bit and test if the stem comes out etc etc...
simply hold the stem with a plier and screw off the old crown with your fingers.
then install the new crown on the stem and put it back in the movement and test if teh crown comes close enough to the case... the crown tube should be a tiny bit visible when you look at it (i mean the crown should not be flush with the case). if the crown is too far away, take out the stem again, unsrew the crown and file down the stem a bit, install the crown again and test fit it etc etc. do that until you are satisfied with the distance to the case. better make more steps instead of filing off of the stem to much at one time.
then comes the cg: you have to file down the cg lever tip a bit so that you can close it again. simply use a file and file around the tip of the lever. testfit it, file again etc etc until the lever closes and sits tight with the crown when the cg is installed with the screws. thats it. not hard but it takes some time for
i used a standard small file for the lever.
for teh stem i used a dremel sanding disc, just make sure that you grab the stem right at the threaded area above the portion you want to sand off. use slow speed for the dremel and don´t use much force.