1:49 PM, Thursday June 17th 2021
It's a little hard to tell, but I don't really think you're extending your minor axes, even now. As shown here on one of your cylinders, this would be what it'd look like to correctly extend each separate ellipse's minor axis.
One other thing - since you've got a fair bit of space available to you, don't be afraid to extend those lines further as well. Right now you're only extending by an inch or so, which doesn't give you too much extrapolation to work with. Extending further is definitely going to make it easier to identify areas where your lines are not converging as they should.