i too have an avistar, and love it i might add it's such a solid aircraft i have had it for two months now after flying helis i wanted something i could relax with.... i use apc nylon 10x6 props and recently got a 10x7 but havent used it yet. also currently removing the dowls to hold the wings and converting it to nylon bolts. i had a little problem with the wing seperating in flight....i guess 10 rubber bands weren't enough even with the last 4 crossed. minor damage to the fuse, as i had to pull it out of the four inch deep divot it made in the field. nobody hurt which is good. 30 minutes of cleaning and glueing and back in the air like it never happened. great plane. another guy at out field just got one since he liked the way mine flew..... it has since then been labeled as the rc lawn jart...lol