I am in Sheffield. I think gritstone is knacky and conditions dependent and there isn't that much of that compared to font.
I guess it shows the benefit of having the opportunity and access to make up for a lack of talent with a willingness to siege.
To the OP, I think that the only way to climb harder is to become stronger. Stick to the BM and don't listen to these guys telling you to refine your skills, they're just jealous hypocrites.
Gents,Thanks for the input and the recommendations. Omar: You say you are clear on what to rectify. Out of interest, what do you need to rectify?