I would suggest at least voicing your issue to Kilwell and see what their response is. Bare in mind that you're better telling them you have an issue before telling us. It's more likely to work in your favour in that order. That is experience talkin' mate. You have a guarantee to have gear repaired or replaced as they see fit. If the repair is poor then they haven't held their end of the bargain. However, if the repair works, despite it not being pretty then they kinda have. Then again, 4" less in your rod? Do you feel the need to buy a Porche now?
I would also suggest you start using rods made of 4" steel so you stop breaking the bloody things!