RE: Super Cub LP wont balance
There is no need to add all the weight for ballast,your wasting WAY to much power carting that stuff around.
I would have left some some negative feed back for this item,as it was not RTF,you've had to add so much weight to get it to fly and/or balance.
What did your experianced R/C friend say about the set-up you have to fly?
Like others have said I would start to cut foam away and start shifting the batt. forward,adding ballast weight is kinda of a last resort option.
Once you get a cog you will find that you have more power,longer flight times and a WAY lighter plane.