Moderation isn't a job, it's volunteer work. Moderators often get things wrong, or they don't complete leaderboard rules for various reasons. In the case of an obscure title it's common. Mods have real lives outside of the internet. I've seen forum posts go months without responses. I would give him a chance to respond. Sounds like his checks are fair enough and you're offering to prove your setup so maybe just leave it at that.

Yeah rules can be a tricky thing is the problem. In this case the game just didn't have rules established at all, likely due to lack of popularity. Making changes to a LBs rules after a run is submitted is more common than you'd think. Best example I can give is imagine a new trick is found that shouldn't be allowed in a certain category. Well the rules don't say it's not allowed, so you could submit that run with that trick, and argue that it should be allowed.

That example is quite petty but years ago (and it probably still happens) people would do that occasionally on SRC. Another example would be maybe original hardware and emulator are allowed to compete until something is discovered that gives one the leg up on another. The leaderboard would likely need to be split at that point, but there would be a moment where those with hardware might have a distinct advantage, before rules were changed.

My point being that all of this isn't really that big of a deal. 99% of the time just working with the moderator is the key to success on SRC. If the rules aren't properly established I would just mention it here in the forums. They'd probably even give you mod status if they feel it's appropriate.