I recently ppurchased a pristine, sticker still on case back pre-owned Swiss Only dial Explorer. The crown is gritty. For comparison, I have another watch with the same exact movement and it’s silky smooth. I called RSC and they said it should not be gritty. Jomashop inspected it, agreed it’s gritty but say it’s normal. I have 2 options. (1) They will send the watch back to me, in as is condition, unserviced, & still gritty. (2) Refund me. What would you do?