Hello Justin,
We were discussing this very issue at one of our Sunday morning breakfast gatherings.
The issues seems to be bikes with drum brakes.
Brake Section 9 of the Schedule 6 for Motorcycles seems to be the reason for inspection being declined. At the end of that section, if the inspection tech deems there is a problem, they are required to remove the wheel and inspect the drum brake internally. Lining thickness, drum diameter etc.
I hope you find a certified facility that is prepared to do the work. It may cost you if they need to take the drum apart. Then there is the matter of you trusting them with your pride and joy.
As for appraisal, the treasurer of GPR section, Brock Hansler, does motorcycle appraisals you can contact him through the CVMG member directory.
Useful link on certification
https://driveonportal.com/ONPublicWeb/en/#/
Wishing you success in getting this done.
Ros Rodrigues