Agilent Ultivo MS capillary issues

We have an Agilent Ultivo MS but have to replace the capillary every 3-4months. Cleaning simply does not help, and no we do not have strange dirty samples or solvents. The cost of these things necessitated us to simply switch of the MS because it is unaffordable. Just wondering if anyone else experienced a similar issue regarding capillaries that simply does not last very long.

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