I have the bug to get back to flying C/L again, mostly because my grandson likes it more than R/C. I flew c/l when i was a kid and more recently with the grandson, but it was allways 1/2a stuff on dacron lines. My question is what are the recommended dia & length lines for the following size models..... .049.... .15-.19..... .35-.40 ? Space is not a problem, & if i'm starting to buy him stuff i'd like to get it right. For some reason he really likes the C/L models better than flying R/C & i'm not discourageing him.....Gene