Okay, I can't figure out how to do this, please help

I am subscribed to a couple of forums so that I won't miss new threads. But I want to be able to fine-tune those subscriptions so that new posts to threads I'm not interested in don't trigger my subscriptions.

For example, I am subscribed to Soundwave's Global News. I don't buy masterpiece toys, so I don't want the new MP Trailbreaker thread popping up all the time. But I can't seem to find a way to exclude that thread from the overall forum subscription.

There is no option when subscribing to the forum to choose to be alerted to new threads only, and in the particular thread there's no option to block or unsubscribe. In my control panel there are options related to subscriptions, but none of them are for what I want to do.

What am I missing here?

Thanks.