I have myself a Roland keyboard (JD-800) that was almost dead,due to 'red glue syndrom’.Weights falling apart,sticking keys,etc.
After some search for a solution,I asked a technician (Roland certified),if there was any solution proposed by Roland,as this seems to affect a lot of synths from that era.I knew there was time where you could buy a replacement kit,from Roland,as long as your keys were standard,but these kits were nowhere to be found…
What he did was,make photos of the synth(opened),the keys,the glue and…the serial number!
He then sent the photos to Roland Japan that,in view of all references and photos,admitted it was their fault (glue),and proposed a replacement of the entire keyboard(just the keys,not the synth itself),for free…! The technician was quiet surprised by the outcome and told me it’s rare they admit an error and repair it for free (lol).
So after a few months waiting,I just had to pay for hand work by the technician and have now a brand new keyboard

Don’t know if it helps or not.I didn’t feel comfortable enough to do it myself,it happens a nice solution was provided...