I have been flying my Hog with a OS 70 4 stroke.....and just replaced it with an OS .91 4 stroke...now I have to put in a lot of down trim otherwise it climbs like crazy. I don't have the plans anymore and I can't remember if they had called for any down thrust....
with all that down trim I don't have enough up elevator....

can someone recommend the amount of down thrust I should put in???

Thanks