#1
*is there anyway to fix this without takin it in to a shop*

On the bridge, theres the tabs that strings go into right? theres 6, and the high e string one the screw comes loose. it vibrates BAD. so I tightened it and it came loose again. What to do?
#2
by tabs do you mean saddles?
I guess just get a replacement set of saddles (cheap).
Call me Wes.
Gear:
Fender American Deluxe HSS Strat
Chicago Blues Box Roadhouse
Bad Cat Cougar 5
1957 Gibson GA-5
Ceriatone 18w TMB Combo
Hughes & Kettner Tube Factor
Various Ibanez TS9s
Weber MASS Attenuator
#3
If you do take it into a shop, it won't cost anything to complain about.

All they would do is fill the hole where the screw goes into with glue and sawdust, let it harden, then voila! You have a firm place to put the screw.