Could you please help me. I was given a Living Essentials by mistral small Food Processor. Approx. 2 1/2 cup capacity. However, I don't have a manual with it. I cannot operate it, presumable it is not locked in properly. However, I have done everything I know how, to lock it in, and with the lid on, however the button to press to operate remains rigid. Could you help me, or perhaps send me the manual? Model No. LEMFP10. Thank you. Margaret Smith