Did you apply
*this file* (babylon 5 v2.zip) as a patch?
Also, did you apply the latest
Components.txt and TechArea.txt files posted a few posts down by Grumbler?
In these versions, there are 5 levels of Jump Gates. They are 4985 kT and are mountable only on ships, not bases. There are also Jump Drives, whihc are 1000 kT and also only mountable on ships. These are the only two types of components with the "Open Warp Point Distance" ability.