A small correction to your earlier post Jaba-Who: APs (for VH experimental) don't actually have the power within their CASA Instrument of Appointment to approve any maintenance aspects for anybody, but they sure do have the power to prevent it, ie, LAME maintenance only, "in the interests of safety of other airspace users and persons on the ground or water." This is common for bought aircraft (to be newly registered), brought in (to Aust) aircraft, and cases where the applicant cannot prove to the satisfaction of the AP that they built it (well, more than 51% of it). So regarding APs "approving maintenance", a better description is that they have no reason to disagree with owner/builder maintenance happening. CASA takes care of the approvals via the various criteria within the maintenance Instrument of Appointment (currently, Instrument 15/16.) If one meets those listed criteria, that makes you approved, and away you go. An APs Instrument of Appointment details very specifically what they can do, and approving maintenance is not one of them. Back at the start of Experimental, yes, it was common for an AP to approve (really, concur with) builder maintenance, (before CASA mandated certain things to happen.) Now, not so.
You have a very good understanding of the processes for VH EXP Jaba, thank you for your contributions to the discussion and keeping people on the right track!