Hello, I'm just looking advice on loft cover adjustment on my 72 ford 4000, the manual states.0.200 for previous models or 0.030 for latest models I.presume 0.030 is the one I need, but it seems to b very very small i don't think there's enough thread on the turnbuckle to screw it out that far, so maybe 0.200 is the one I should use, I'm just not sure, 0.030 of an inch is barley visible, any one have this issue b4? Thanks