I replaced the dip stick tube after purchasing my 'Cuda. The original had been bent and broken. I purchased what was advertised as a reproduction of an original dip stick tube. After putting 5 quarts of oil in the engine the dip stick is still showing 1 quart low. Either I have the wrong dip stick or the wrong tube? Can someone give me a length on a an original 340 dip stick tube down to the collar where it meets the block?