Walter:
You make me feel BAD, really BAD, since that Maple should be my best buy.... I usually buy really cheap trees and of course get really bad material, the most expensive tree costed me an equivalent to $6.
Well, perhaps you placed it in a pot too early? Well, who am I to ask? But, I followed the growth in the pics, and the trunk remained almost the same during 20 years!!!! Maybe a box, or a shallow trainning pot would have helped
Finally, if you don't like the tree, we like it

so, I am with OMC the tree is no the only one who is growing, so we do... Right now as a beginner I am working for my trees to be nice in some years, but as OMC, in that amount of time, I maybe won't like it... Bu, hey, that's what makes Bonsai so addictive... !!!
Great thread, and great tree, even if you don't like it... We, begginers, like it...

thanks for that advice, and I have a solution, why don't you sell it?

hehehe... just kidding...
Bye...