OS calls for a 13-6 to a 16-6. I flew it before with a 13-8 and it was fine. The 14-8 seemed to bog my plane down for my style of flying with my tiger 60 today. On the slower side on all manuvers. The crackling sound was in almost all positions I had the plane in. A 14-8 is something you'd put on an astro hog bipe with the 90 2 stroke, not a tiger 60.
When I was going unlimited vertical it was crackling so bad I thought....I better bring it back down before she blows up on me!