Good morning everyone I just purchased a 1977 20C RANGER,  I thought this would be an upgrade from the 1963D Mooney that I will be selling. My 63 Mooney is in great shape, not sure yet about my new purchase. My question I have is that their was an electric elevator trim system installed however it is not working. When I invested gated the problem I discovered the electric trim motor has been removed. Where can I find information on an elevator electric trim system? Thank