A filed gripper is still the same as it was before filing. Only the very last range is different. And so if the gripper was easy to you before, you'd be able to power through the filed range.
I think the effectiveness of filing is vastly overrated. Tbh I'm unsure if it has any benefit at all 🤔
IMO you can’t compare ratings with grippers that are filed and/or have a very narrow spread. A gripper with narrow spread can have a very high rating compared to how it actually feels. Same goes for filed grippers.