'97 GSXR600. There are two oil lines on the front of the engine, one smaller going from crankcase to cylinder head and one larger from from crankcase back underneath into the crankcase, possibly from the oil pump? Anyways they were both leaking, so I went to a hydraulic hose place in Langley (Gateway want 140 just for the bigger hose, not a chance) to have new lines built. I changed the oil after I bolted them on, and found a ton of gas in the old oil, probably from running it for short periods on the choke and then letting it sit for a while. After I got it all running, it wouldn't build oil pressure. On a hunch I took the new lines off, and noticed that while externally they're the same size the ID is significantly smaller. So I'm thinking either the gas in the oil somehow did the oil pump in (it did have pressure prior to this), or the new lines are too restrictive and the oil pump can't build pressure past them. Any thoughts?