Weight does help a female produce larger, and maybe more eggs.
But this is not 100% true. Each female is different, and it all just depends on her body, and how many follicles are created. You could have a 1500 gram female lay 10 eggs, but a 2500 gram female lay 4. Its not up to us, or the snakes... just how they are.
Although, clutch sizes, and egg weights have known to become greater with a larger female.

Hope this helps.