can anyone give me some cheap advice in this department?  i am not looking to replace any parts right now.   looking for lighter and smoother from a factory bushy.

Best I can do.

Trigger job

Hi wozzy,
My factory bushy came with a trigger that felt like a light switch. I gave it 500 rounds to settle in & had no improvement. I bought a new trigger, hammer & disconnecter from del-ton it made a huge difference & now I'm real happy with it.

Quoted: can anyone give me some cheap advice in this department?  i am not looking to replace any parts right now.   looking for lighter and smoother from a factory bushy.

I know you said that you don't want to replace any parts,
But if you replace the springs in your fire control group, with a JP Enterprizes reduced power spring set ($10), you can take a few pounds off your trigger pull.
http://www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=7582&title=AR-15+REDUCED+POWER+SPRING+KIT

I put this set in one of my Bushmaster a few years ago and it took about 3.5 pounds off the trigger pull, and I have had no problems.