2009 Toyota Sienna. I installed both front and rear brakes, including rotors. All are Raybestos EHT. The rear brakes are squeaking because of the shim. The shims are a tad loose, so I had to bend tabs a bit to get them fit tightly. I did clean and lubed the brake hardware. I applied silicone grease on the pins and Permatex purple grease on the calipers' ears only. Now, they are still squeaking because of the shim shifting. I did not apply any grease on the backing plate of the brakes. I find that the shims are the weakness on these. Any tips?