Hi Kerbonauts, I need some help with funky fuel flow. I designed a craft with ridiculously long small diameter boosters. So I thought, "Why not asparagus them and save the length?". So I split each booster into eighths (they were very long ) and set up the fuel pipes and staging. After several failed launch attempts (<plug>using TriggerAu's excellent Alternate Resource Panel for debugging</plug>). The two fuel lines connecting the two engine stages are the only pipes installed without symmetry. My debugging could be wrong. I could have a mis-placed fuel-line. I can't see why one works and one doesn't. Links to craft below. This one behaves as expected. This one doesn't. I had to re-arrange the staging a bit between the two. One is four stage, the other eight. I did this purely by re-staging the decouplers, didn't touch the existing fuel-lines. The original had a payload, which I removed. I use a few mods (KER, RT2 - I removed the antenna, the above mentioned ARP, no others that I think will interfere). Could any rocket boffins help stop me going crazy, please? I could just replace the whole shebang with 2 large-diameter boosters, but where's the Kerbal in that?