[boomergeek]

I think the total weight of the shipped robot plus withholding allowance is intended to be 120 lbs.
Additional fabricated items that are not explicitly spare parts are not intended to be allowed to be brought to a competition site for use on other robots:
If it were, then two teams could collude to totally circumvent the withholding allowance by bringing an unlimited amount of fabricated parts for each other's robot but not their own. (Heck, if the rules were that loose, you could bring a whole second fabricated robot and give it to another team to use in place of their own.)

I would say you can bring spare minibot deployers above your withholding allowances if and only if they are explicitly to be used as spare replacement parts for your own robot- not fabricated parts for robots that might be your alliance partners.

That said, a team can bring as much raw material as they like and fabricate as many minibot launchers as possible during the times the pits are open.

Do others see it differently?

The real question is: how would the GDC instruct robot inspectors to see it?