1. Is there a downside with using a USGI Long trigger with a high quality ignition set, and do you think I would be happy with this setup? As opposed to an aluminum with a over-travel screw/stud such as a Harrison Design HD trigger. 2. Serrated vs smooth which do you prefer? I understand a serrated trigger can wear your skin off for long range sessions, but what would you prefer for a ccw/house gun. 3. I'm looking for a solid, black, and long trigger. I've heard some Aluminum triggers cracking, which is why I am considering getting a colt steel trigger, but are my aluminum worries founded? 4. I assume it his harder to fit a steel trigger, and I would have to get it recoated after fitting so I won't rust. Correct? 5. Thanks for the help in advance. This will not being going on my gold/platinum/pearl Taurus aka Perfection, but on my Springer GI.