I just did the boots on a '94 750 and a '95 1100. Both seemed to have a lot of thread locker. I used heat on a screwdriver before twisting but kept the heat on the conservative side to avoid damaging the boots. I was able to get 15 of the 16 out. I've got a little project on the 750 now even though I got a 93% on my efforts
I noticed how the lower row are kind of hanging out in space and took it easy with the hammer. I did smack the screw driver bits into the screws multiple times durring the process and used a center punch ar a 45 degree angle to try to shock them too. I think heat is the key but don't know how to get enough in there without damaging the boots.