I have multiple poly and multifillament 40 feet strings. Would there be a problem to hybrid them in a 93'' inch racquet KBladeTour, with 18x20 string pattern? This is my first 18x20 racquet. So that is why I ask. 20 feet (half) is enough for mains and crosses aswell? If that is true then that is perfect. Or do I have to use the string once as mains then the other part of the 40feet as crosses for the 2nd string job?