Plywood slot cutter 5mm

Meihejia 14 Inch Shank Slot Cutter Router Bit Set - 6 Size 1_4 slot cutter router bit Saipe 5pcs T-Slot Cutter Router Bit 14 Inch Shank Keyhole Router Bit Set with 14 & 516 & 38 & 12 & 916 Inch Blade Diameter for Wood Hex Bolt T-Track 1942 sky warrior slot Result is the bearing is so big that the slot cutter doesn't go as deep as I need So do I buy smaller bearings or buy larger diameter slot

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