Just assembling the 'Black Horse' ViperJet. Comes with nice oleos but no retracts. I am using Robarts. Cable noseleg steering is used. As designed they go through tubes, one either side, that take a broad curve through some formers from the servo (behind the nosewheel) past the leg, to the steering arm. It works, but goes loose (obviously) when retracted.
A better way, works with most planes.
Run the cables though nylon tube, such as Sullivan outers. On each tube put a length of loose-fitting heatshrink tube about 2 inches long. Make the nylon tubes slightly shorter than the length of the cables and don't attach them to anything, let them 'float'. set it up so the cables are tight when the noseleg is extended.
Retract the leg.Take a long strong tie-wrap, cut the ends off (your are only using the middle) take one side, push (from the rear) through the heat shrink. Go back round the nosewheel and forward again through the heat shrink on the other leg. Thus the tie-wrap takes a 'U' round the back of the wheel. Tape it temporarily and adjust. When satisfied, shrink the heatshrink tubes.
This will allow full tension when the leg is extended but spread the tubes (and the cables within) when the leg is retracted.