the only repair we trust on a big bike is a vulcanised one, they go to a specialist take a week and cost £40. Im sure no one would tell you if they had one fail, it wouldn't be good for business , would it? that said the vulcanised repair is only recommended on specific areas. Melksham tyres advise if a repair is possible or not.
its your potential accident, its up to you when you can get a pair new for £130