I love and hate this hobby at times, hear me out. I visit this site at least once a week just to see what you chaps are up to. Have not post anything in over a year. But once I read Mera C piece on Polistil super wide curves, I have been on a tear to find out all I can on Polistil 5 degree curvers. I went so far as to contact a seller on Ebay Italy about how many pieces I could get my hands on, an I am almost positive he did not speak English. Yes I am pityful. So if I use the 5 degree curve as the outside curve what degree Polistil curve would I useon the inside if I am running 4 lanes?? Looking forward to hearing from all of you.