Surface irregularities on my Helix

Is the scratch along the central vertical line of the tool. Might be the center molding line. Or if to u are cleaning it with bleach I have heard it can damage the plastic wi th prolonged exposure at high concentration. Some people here have used ultra fine grain sandpaper to remedy this. Like for smoothing out fiberglass on boats. Think it was like 3000 grain or something. Assuming you are talking classic.
But my peridise set has a vertical groove in it where the pressing seems like it was slightly off. Has not affected the performance. So can be normal but I don't think amazon will work to replace it but tell you to call the manufacturer.

My first Helix-c was remarkably free of molding 'anomalies.' I misplaced that tool about a year ago and bought another Helix-c which had the mid-line 'scratch' described by @yankeecowboy.

Rather than return the tool, I found it easiest and quickest to just smooth out the plastic, first using 600 grit paper followed by a finish polishing with 'crocus cloth.'

As with polishing brass uniform accessories, this action multitasks well with a movie on TV. I've also used a jeweler's rouge cloth or automobile polishing compound for this final finish. I follow that with a good scrub to remove the residual abrasive from any surface imperfections that remain.