I use to assist with rwc inspections in vic too... the rolling diameter is correct (for vic) that as long as it is within 15mm +/- its fine, however the only thing stated for rim is that they cannot be welded,repaired or 2 piece etc... and the overall width of the rim (not to be confused with the diameter of the face of the rim) cannot increase or decrease by more than 1 inch (from memory) but a lot of mechanics use this rule for the face of the rim too, the main concern there is that at full lock it can foul parts of the under carriage and can cause an accident in theory. the leaking rocker cover should only fail if it meets the following, (going from memory here) clean the leak, drive for 5 min, idle for 20 min, if leak drips more than a 20 cent piece its a fail, if its just a weep then its fine. as for fixing it there is no silicone/sealant needed, just a new gasket and approx 10-15nm torque but make sure you change the spark plug seals too as they are more common to leak than the outside seal. you can find the kit at any auto parts store for approx 20-60 depending on brand and store. DO NOT ADJUST THE HANDBRAKE BY THE BOLT IN THE CENTRE CONSOLE AREA! to adjust it all you need to do is take the little rubber inspection cover out on the back of the drum, with a flat blade wind the adjuster in there a few clicks and test the handbrake, approx 4-5 clicks with the handle should be full lock on the wheels, any other method anyone tells you is wrong aside from a stretched cable which almost never happens.
the fact is he is a licensed vehicle tester so one would assume he knows the rules better than us, he has inspected it and found this to be wrong so deal with it plus it is his job and livelyhood on the line if his license gets pulled due to an audit for suss rwc's so sometimes you just have to bend over and take whatever they say within reason, he could have found a hell of a lot more to fail so count your blessings, I just picked up my rwc for my ce today after doing repairs this week, mine found windscreen, front seat belts not retracting properly, 4 tyres aged and bald, rear wheel cylinders leaking, foglight not working, number plate lights not working plus a few insignificant things. all up cost me about 400 total doing it myself. your repairs should cost you less than 200 depending how you go about it.
granted the rules are different in every state so please confirm everything with your own rta/dmt etc... but unless what they pick on seems unreasonable like a dried oil stain on a rocker cover being failed as a leak, you should just fix it and move on, afterall they are certifying your car is safe for the road which impacts everyone not just you, think of it this way, if they passed a car that was not roadworthy due to bad tyres or an oil leak and they caused an accident which harmed you or your loved ones, you would be out for blood and money.
