In reply to andy farnell:
Thank you all for chipping in and even the offer of replacements - unfortunately my feet are a smidge larger than 38.
I currently have the red instinct lace but find the toe box a bit too large (compared to the spectro). Maybe I'm just too fussy, and very much doubt it's the primary thing holding back my climbing - but . . . . I'll look out for the new Instinct Lace.