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Hello, I'm stuck on 45 across: Makes ball spin unexpectedly, and this is at the tail (9) I_S_ _ HE_ES
I'm also confused what to shade, is it the 'lines' or a different six words including the one begining with 'U'.
(I'm trying not to give too much away to spoil other solvers fun)
Any help/hints to both these would be gratefully received!

I haven't got the paper now, but I think that answer was Inspheres.
I think I highlighted seven things - two made up a two-word phrase,the definition of what the other five are. Hope this helps!

Thank you Malone - I get it now!