Consult with a workmen's comp lawyer and await a hearing before the comp board.
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You have switched lawyers; I hope you are using a person who specializes in workers' compensation law.
You cannot force the insurance company to settle; they will only settle if they are paying and foresee the prospect of paying you for a long time.
You didn't say if they are paying you. If your doctor says you are disabled and the IME says you are not, it is simple. Both doctors have to testify and the Judge makes a decision.
(formerly Auburndale Lane, Flushing)
The foregoing is based on the little information provided; additional facts may change the comments given.