With the hardware supplied in the Mountain High EDS ip kit, I began installing the oxygen delivery lines (red for demand metered, blue for emergency free flow). I did not attempt to install the unions to the cabin top as any hardware would be inaccessible under the overhead console. Instead, I used the supplied clips to secure the lines in such a way that the unions would be restrained. The red line proved to be difficult to feed over the barbed connections on the distributors but a heat gun helped. I could not secure clips into the aft portion of the cabin top with screws but used CyA glue instead; the line load (weight) is very slight so I don't expect any problems. The tail of the lines, which will feed through the baggage bulkhead and down to the oxygen bottle manifold, has not been secured or cut until that final routing has been determined.