IMPRESSIVE! That is beautiful, Bob. What's your estimate as far as a date for a maiden flight? You have to be getting anxious, and maybe a little nervous?
I know what you mean by "popular brand" and understand your disappointment. I recently bought a pair of 4" wheels, probably the same manufacturer you failed to mention. Both tires were so out-of-round that there were essentially unusable until I used my bench sander and took off the 'lumps'. I've been seeing a decline in the quality lately of some of the better known brands...but the prices aren't reflecting the lower quality, are they?
Tom