Agreed, 10% MeOH/DCM with 1% NEt3 will move most things.
Before you run the TLC, dope it with NEt3. To do this, before spotting your sample, soak the entire plate in ~10-20% NEt3/pet. ether and then gently dry off the plate with a heat gun or hotplate. Then use the plate as normal. If you don't do this, when you run your 1% triethylamine eluent you will get a line across the middle of your TLC plate (the solvent front of the NEt3).