Tom, I love my Flite Streaks!! One is the stock ARF, with an FP 20 and a 2.5 oz uniflow tank, the nose has been repaired twice due to some hard landings as the nose is sorta hollow and does not take much to break off! I don't think the stock fuse has enough room for a hayes 3 oz. tank and still keep it in line with the needle valve. The other FS has a lengthened and strengthened fuselage with a .25 la and a hayes 3 oz. tank,muffler pressure and the stock tailfeathers and is my favorite plane to fly, light, plenty of power, plenty of run time and just plain flies well!! I believe there are threads on this forum about building a new fuse for the FS arf.