Rustly AR18s

[Mark]

My 88 year-old father recently complained that the Acoustic Research AR18 speakers I gave him 30 years ago were sounding a bit “rustly”. I checked them out last weekend. One was dead, but as they were only 4ft apart I guess it was easy to miss one channel:-) and the other sounded sort of OK except for bass notes which were broken up. I took the grilles off and a handful of crumbly stuff fell on the floor and I saw that whatever was supposed to connect the cones to the surrounds had completely gone ! I have seen DIY repair kits for sale on the internet but I would rather let someone do it who does it all day every day. I need to get some quotes to see if they are economically repairable. Is there anywhere other than Wembley loudspeaker anyone would recommend ?

Thanks

Mark