blade don't last on WRMK score & trim board

[mac4551]

I seem to go through a lot of blades with my score and trim board. They cut great for about a month, then give me a jagged edge. These blades have the razor tip off to one side.. to fit the new boards. The old blades with the razor tip in the middle seemed to last several months. Has anyone else had issues with the new boards and blades?

thanks

[canada goose]

I purchased this as a back up to my old Tonic rotary trimmer and bought back up blades at that time about two years ago. I have not had to replace blades. My Tonic on last legs but still my go to .......for the present.

[harvestmoon]

It sounds defective. I would contact the manufacturer.