just use a straight screw driver to pry the top and bottom seals out. then there gold peice will fall out of the bottom and the bearing will come out from the top. depending the age of your bike it may be a good idea to replace those seals. as for the a-arms, i wouldnt attempt it just yet. there is a guy here working on trying a set to see if its possible to do. he has heard that if you put them in a certain way, the rubber surround will melt, but then reform when cooled. who knows as of right now. is your powdercoater gonna have the frame sandblasted or are you? it has to be sandblasted. also i reccommend checking the frame over for cracks and such. if there are any have them fixed before you pc. if there are any unneccessary mounts cut them off and grind them smooth.