Prosecutors salvage case against senior Rebels bikie

But the high-profile case against the club's Southside president has been delayed by another five months, and will now not be completed until April.

A pump-action shotgun, ammunition, knuckledusters, explosives and an extendable baton were allegedly found during a raid on a Wanniassa home in June last year.

Rebels paraphernalia and documents naming the accused, Michael Wayne Clark, were also found in the home.

Clark has pleaded not guilty to possessing the weapons or explosives, and is currently facing a hearing in the ACT Magistrates Court before Special Magistrate Maria Doogan.

On Wednesday, Clark's barrister Jack Pappas objected to a series of certificates being put into evidence.

The certificates, issued by police and WorkSafe ACT, were designed to prove Clark did not have permission or licence to possess the weapons or explosives.

Mr Pappas argued the certificates were riddled with defects, and had not been issued by individuals who had the required authority.

The objections threatened to derail the case, and the prosecution conceded it might not be able to proceed if the problems could not be overcome.

But prosecutor Joel Hiscox arrived with further evidence on Thursday morning, which helped shore up the authority of those who issued the certificates – Ms Doogan's main concern.

The court accepted the certificates, effectively allowing the prosecution to proceed.

Mr Pappas continued to object to other aspects of the evidence being put before the court throughout the day, but most were dismissed.

Two days had been set aside to hear the case, but it ran well over time, forcing the court to delay it by roughly five months, to April 11 next year.

An alleged seizure of steroids from the Wanniassa home was deemed unlawful on Wednesday, because it was taken outside of the terms of the warrant.

That meant evidence about the vials of steroids could not be accepted.