Agency CVs are no-nonsense - they'll edit your CV to remove all the guff, highlight the relevant quals and experience for ease of use by the client, and reformat it into a standard format (at least we do anyway)
... thereby throwing away the formatting that is a deliberate part of your sales pitch ("yes I
can produce decent documentation") and more often than not adding spelling and grammatical errors that weren't in your original, thus ensuring that the recruiter bins your CV unread.
Business prevention agencies: Just Say No.
(When hiring I routinely bin CVs with spelling errors. Where these have obviously been reformatted by the agency - whom you would expect to
correct any errors in the original, not add new ones of their own! - I have sometimes felt a fleeting sympathy for the applicant. But only fleeting, because if they were any good they wouldn't have chosen an agent who was going to mangle their CV.)