I have two set's of carbs for a 95 VN 750, both have been opened up by previous owners and both came from different people. When I opened up the carbs to clean them out, I noticed on the air cut valve I have two different length springs. On both sets of carbs I have a long spring and a short spring in the air cut valves, on both sets the springs were on opposite sides. Looking at Ron Ayers, it shows both springs are the same part number hence should be the same length. I have the right springs since I have two short (about 3.4 inch) and two long (about 2 inch). Which ones are the right ones to use in the valves? Is there any reason why there would be 2 different size springs installed?