Correct, one was a 60-size Sopwith Camel, another was a 120 size GBY

However, the worst culprit was the GP Seawind (91 4-stroke) The nose of this plane is full to about 2" back with a mixture of epoxy and lead shot. Now, granted, I left out the nose wheel, but still, on top of the lead shot I had to add 22 ounces of lead

Note the picture below. 4-cell battery, nose full of epoxy and shot and a humongous, 22 ounce (That's almost a pound and a half) hunk-O-lead!

But the plane still flies great!