That 86 paper of Hakkonen’s (claim of a size limit of 2,000,000 lbs) is a total joke and if you don’t KNOW why that’s a joke, I’m not going to explain it for you. Why don’t you take a really hard look at the thing and come back and tell ME why it’s a joke, I mean if you can’t do that you’re not really worth arguing with on that sort of topic.
While you're doing that, please cite a peer reviewed paper by any physicist or cosmologist who believes gravitational coupling was smaller in the past.