I'm on shave number 5 with a Vector cartridge in my Atra razor. After the last 3 shaves I've felt a bit of burning on my neck area- nothing red or even noticeable- just a slight stinging. I haven't changed a single thing other than trying one of these carts. I'm 3017ing the same soap, using the same brush 90% of the time, only going WTG and have had no problems using the Personna carts in the past. The cart is still cutting well and not skipping or tugging. The blades appear to be ok- no noticeable corrosion or dings from tapping them in the sink. Could it be the lube strip? It's green instead of white like the Personna. I know it sounds ridiculous, but I can't think of anything else- wanted to know if anyone else has ever had a problem with the Vector cart or lube strip in general?