Hazels_Sandbox Thanks For The Comment, I Think Its An Inherit Problem With Using Portals, Although Changing the Tmp, might fix it.
you are runnig put of oxidizer before you run out of fuel, and seein as this would turn your einge (and rocket) into a pile of metled metal you may want to fix that, other thank that its very good, though it would proably be more simler to and oil right design as those are more stable