Thanks for the info.....you hit a hot button on the balance thing..A guy at the field maidened one on the weekend and it was ungodly heavy. He had a 60 two stroke in it and had to add huge amounts of lead to get it balanced....almost seemed like something was wrong with his method...he actually used a section of a scuba weight plus a bunch of strip lead to get it. I almost couldn't watch when he took off. It flew well but I'll be damned if mine is going to be that heavy....I'm already cutting a hatch to put the battery up front behind the firewall. I'm using a 91 4stroke. What have you got in it and how did it balance? Any other suggestions?