why does it seem like that the old stuff is built better than the new i have a 79 merc 20 hp and it start on like the 4th pull and i have a 66 johnson and it startson like the 2nd pull i have my 20 on a1960 15'6" alum baot and it runs like at 20 25 mph i have a 18 in the shop witha bigger carb and i wounder if it will not go faster or get out of the hole faster the 18 is and 83 if any one can help me plase do so thanx