Completely agree. I have had....and loved........quite a few Striders...they're all gone......I just prefer knives that have less headaches and better customer service on those rare times I need it.
I have had great success with Sharpies. I don't know why they work, I can only presume there's Graphite in Sharpie ink. Sharpies and pencil are such a close first and second place that the reason to use one other the other is simply availability. YMMV.
Ah Strider knives, I used to own a bunch and accepted that they came defective. I also knew after repair (or two) they would be perfect. As years went on and my knife tastes evolved I sold my Striders and moved towards knives with fewer headaches.