The first major improvement done by the Troyer's when they purchased the business from Creative Universe in 2014 was to have a mold made for their own glide buttons. These buttons will not deteriorate.
If you have a gourd rack made prior to 2014 your buttons may crumble apart and fall out. Unbeknownst to us in 2010 or 2011, the glide button supplier switched manufactures. The new manufacturers glide buttons did not have a UV-inhibitor in it (though it was advertised that it did). As the problem didn't rear itself till a few years later, we had no idea that a problem existed. If the glide button(s) fail your gourd rack will not go up and down the pole smoothly.
This custom made UV-inhibited glide buttons will not deteriorate like the CUE version has shown to do. If your glide buttons have deteriorated here is your opportunity to replace them with this economical buttons.
This should be done prior to the season starting or after your martins leave. You will need to remove the hub from the pole. To install the glide buttons, insert the glide button from inside the hubs designated glide button-holes.
For Gourd Rack like the Super System, AAA, Gemini, 8 Unit, all that have a square tubing type hub, remove the hub from the pole, remove all the glide buttons by using a set punch. Insert the glide buttons from inside the tubing out so that the button part is on the inside of the tube (hub). Add a piece of packaging tape over the button head. Slip the hub back onto the pole, the glide buttons will stay in place due to friction. Leave the tape in place, it will wear off in time.
For Gourd Racks such as the Deluxe and K-Series. You still need to remove the hub from the pole. Pop out all the old and worn glide buttons from the hub using a set punch or screwdriver. Insert the new glide buttons. Place a piece of packaging tape over the button head. Place hub back on pole.
If you need, refer to the gourd racks assembly instructions which can be found on this web site (for example, if you have a Deluxe Gourd Rack, search for the Deluxe Rack and the instructions can be found on the bottom of the page as a free download).