Strange you say that, I have been working in partnership with another plumber these last 6months, the last pair I had for a fair few years no problem.It is a bit strange, Hilmor (Irwin) usually have a very good rep. They do have a load of spares so if needed you can replace the guides/formers and hook.
Are you doing anything unusual with them though? Jerking/snatching when pulling your bends can sometimes cause strange wear on benders. If not then they'll be guaranteed if only 6months old, get them in and change them.
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