hi everyone. doblo 14 on a 56 plate petrol. its got a real loud hy-tappet. took the lid off expecting to find a spray bar . but it looks as if its built into the rocker cover . put it in the bath and with the shower head removed ran hot water through it .now it seems to have 3 large holes where the oil comes in (one in middle and one at each end) but the in built spray bar ! only seems to squirrt from one hole, is this correct,