I recently strung a Head Speed Pro 18x20 2014 model and ran into a bit of an issue. I am using a gamma x2 drop weight stringer and ended up not having enough string left over on the mains to pull tension. I went by the specks online and it said to cut 21' and 19' from my 40' package. I felt like I would have needed to be at least 23' on the mains to have enough string left to pull the final string. I also know that would only leave 17' for the crosses which I don't think will be enough to finish the crosses and pull the final string there. Has anyone else strung one of these on this machine? If so, what lengths are you cutting so that you have just enough string to pull the final mains and crosses? Thanks for any guidance you can provide.