I started a game with bobs mods and extended costs, and the science costs dont seem to be increased except for a few like nuclear power, which is about 10x as expensive as the surrounding techs. Probably need to reconfigure that.

*e im not using the space age dlc

Seems like the incosistent cost is just a bobs thing. Still your multipliers just dont apply.

Can you post some screenshots (ideal)? Or at least some specific examples.

I tried this and it seems to be working for me.

Multiplier noadjustment:
- Logistics 3: 1, 1, 1 x 150
- Logistics 4: 1, 1, 1, 1 x 250
- Logistics 5: 1, 1, 1, 1, 1, 1 x 300

Multiplier extended:
- Logistics 3: 2, 2, 2 x 450
- Logistics 4: 2, 2, 2, 1 x 750
- Logistics 5: 2, 2, 2, 2, 1, 2 x 3000

yea i dont see any bugs anymore, i probably did something stupid and didn't wait a day to report, sorry