ideas and help please ......i wish to get a new gooseneck for alloy mast 55mm to boom

Ronstan has RF2527 @ $67.32 + freight $17 0r much better RF2524 @ $152.00 + freight

both are sorta ok but pricy and better than what i have been using with limited L/R movement.

I would like a sliding circle that slips over the mast giving up and down movement and spears

the boom, allowing L/R , tensioned down to work with a downhaul chord.

I recon someone must know of so a photo may be of interest and a price please

If you have to have a gooseneck, just use a plastic rowlock. it does everything a fancy yacht one does and you get 2 in the bag for about $5.
downhaul,vang would be fine

And here I was thinking Landyacht had 'no eye deer' on the topic...............