Pretty much every Local out there has a Law firm on retainer. That does not mean they are automatically on the Union's side,...or your side.
They are on the Ethical Law side,.......That being said, if you approach them for pro bono legal advice concerning a contractual issue, and they advise you that you have a fairly good case.....NOT a slam-dunk,....then you should proceed to the Local Union Principal officer to override the B.A.
If he agrees with you,......he can push the grievance,...on behalf of your case. He can get the grievance scheduled.
However,....you haven't said whether you've had a first meeting with management in an attempt to resolve the issue. You MUST have a steward, committee person,...and preferably ...the B.A. in question with you......
DO NOT attempt to meet with management on your own.......That can be a deep,deep snakepit...........
It is the .....personal opinion.....of that B.A., as to whether your grievance has merit. What does your barn steward/committee people say? In many cases, they know the contract better than the B.A.....who may have been elected out of a completely different industry with a Teamster contract,....and may not fully understand your contract.
If you have a consensus of the leadership in your barn..(..steward/assistant/committee..)..that your grievance is valid.....and it's outcome will affect future conditions of the barn.......then proceed with full confidence right through your Local President,...and beyond to the NLRB if need so.......
Pick up a copy of your Local Bylaws....and the IBT Constitution......Both of them have mechanisms to file charges and remove officers who've gotten too ...."chummy"....with management.
The preponderance of proof is on YOU............so don't file charges just because you don't like the guy..........
And,.....if everyone I've mentioned has told you that your grievance has no merit,...........then I suggest a slow, careful reading of the entire section of the contract you believe is being violated.........As a steward myself,...I've had to remind guys there is no "Hurt Feelings and Insults" section of the contract,....and you can't use grievance machinery for personal vendettas......
Good Luck, Brother..........Merit or not,.....you're still a Union Brother in need of advice.....