Looks like horses for courses on weight. UKis now suffering extreme weather conditions long term. All my models have been 7 to 9 lb. I had a bossanova coming in at 6ib and after managing to land it the wind blew it down the runway.Always! So i will stay at 7.5 lb with miniplane. Correction to prop 13/7. 13/6 runs out of steam. 13/8 slows engine too much. pics coming soon.regards Glen</p>