I have a bach 42bo trombone that i love very much. Its gotten me to 1st chair in the top band at school. But i have a consistent problem. My f trigger makes more noise then any other trombones. Ive tried lubricating it with valve oil daily but that doesn't seem to help. also it gets stuck sometimes even after i oiled it. please respond if know anything on the subject

I am not familiar with the trombone in question, but I am very familiar with rotory valves. I wonder if the sound you hear is coming from the valve or the valve linkage. If this is a mechanical linkage, they are more noisy than string linkages. And then there are the ball and socket linkages.

Check what kind of oil you are using. DO NOT USE oil for piston valves (trumpet valve oil) You should use oil intended only for rotory valves. Using trumpet oil will surely scratch up your valve. I suggest double checking you are using rotory valve oil. I would also suggest you try key oil (that clarinets use for their keys) on the linkage pivot points and the back bearing of the rotor. DO NOT PUT THE KEY OIL ON THE ROTOR THOUGH, ONLY THE LINKAGE(S).

When you do oil the rotor here is how I do it. Each day I take my horn out I take the rotor cap off and put a drop or two of oil on the center of the rotor and replace the rotor cap. Don't screw the cap down too tight, just firm. Then I take a slide out and put several drop of oil in the slide so the oil can get to the valve that way. That's all you need to do.

Other noise reasons ::
1) The valve may have developed play from wear and tear, (you can't fix this yourself).
2) The valve may have built up corrosion or other deposits (don't try to fix this on your own now but down the road you can learn how to do it yourself).
3) The valve can be worn or damaged. (you can't fix this yourself).

Answers to other reasons::
1) A good instrument mechanic can adjust the play.
2) The valves can be cleaned by someone who knows how to remove and install a rotory valve. NEVER do this yourself unless you have learned from someone who knows what they are doing. And not until they say they think you can do it. I have seen many valves ruined by someone doing it incorrctly.
3) A good instrument mechanic can rebuild or have the valves rebuilt and then reset into the valve casing if they are worn or only slightly damaged.

Review::
Check you oil.
Try rotory valve oil in the rotor and key oil on the linkage.
If the sound is still there Go to a quality repair shop. Go straight to the repair shop, do not pass go, before any more damage is done to the valve.