Hi Rod.
Whilst recovering mine (outdoors) , the wind picked up and the fabric folded over when I was spraying the glue ... on the corner by the sun visor.
I let it dry overnight - I also purposely sprayed some glue on an off cut so that I could experiment.
I used a small piece of 3m scotch pad to roughen the fabric, I also used a small brass bristle brush that I used to use on suede shoes (not of the blue variety!)... I picked off bits n pieces of the glue with tweezers.
i used cigarette lighter fluid (naptha) on some cotton buds changing them frequently. I was quite vigorous. Dont touch the area straight after as it feels tacky, again, let it dry back - as you can see I had good results!
glue residue.jpg