I am the fortunate new owner of a Thompson Fisherman II, 1979 model with an OMC Stringer 800. Problem is, I can't find any information on my model outdrive. The plate on the outdrive shows model 981918, serial #w210700. I haven't been able to locate repair/parts manuals that reference these numbers. And, yes, I have confirmed that these are indeed the numbers stamped on my outdrive. Help me, please!