Theres no trick to injectors/o rings/etc. Don't break the clips, is all.
Joe you're doin a bang up job, but 1200 degree enamel will flake the first day. Exh temps are 1600 or so, there's no spray on paint that'll last. Bummer, I know, cause it looks really cool. I'm glad you're doing your valve cover, I'm gonna have to do mine when I repaint ~ oh and on a side note I'll have to get some better legaljdm.com sticker pics with the new wheels