How is it when the car is off? If its okay when not running id suspect the clutch isnt clearing enough and dragging the gears. If its the aame with the engine on or off then may find its too thick an oil in the box causing too kuch drag on the synchro. A thinner oil like automatic transmissikn fluid may recify this. Reverse gear being tricky to get in is fairly normal as your pulling the reverse idler into mesh and youll often find it may not be exactly lined up meaning its hard to get into gear. Im
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