Recourse after unfavourable adjudication

Tenancy Deposits

As part of a dispute, I had asked the scheme management for specific help regarding what evidence was required, but they did not provide that information, although confirmed receiving the rest of my submission. The adjudication judgement arrived today, and says what I should have provided (which I could have but no-one said I needed to). It says that I cannot recover more tha £2000 rent arrears nor more than £1200 in costs (the total deposit was £2475). I am bitterly dissappointed and disillusioned, and feel let down by the adjudication process and the scheme management. Without going further into the specifics of this case, what further recourse do I have, to (1) either try to reopen the case and submit the additional evidence, or (2) pursue the tenants in the small claims court?