I have a PAW 80 that I am having trouble starting. It seems to take a lot of compression to start and then when it does, it labors and runs real slow. Any changes in the compression or needle valve kills it. I get the same results using either home brew or Davis fuel. How high/low do you need the compression to be in order to start? This is my first attempt at a deisel and the engine is second hand.

Any help would be appreciated.
Thanks
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