Note: This is an update to this earlier entry. This one probably won't make sense unless you've read that one.
Well, just as I was anticipating, he has made steady progress! He's had it for just over a month now, and in my opinion, has made significant and steady progress! When he first got it, his left leg did almost all the work, which was sort of to be expected as his left side is much stronger, and always has been. As time has progressed though, and he has stayed dedicated, he is now able to make both sides work together equally, and maintain that equality throughout the duration of the training session! Also. it no longer causes him the pain it did to begin with to straighten out his legs to put them in the bike!
To some, these "steps" may seem grossly insignificant. That's ok though because they ARE significant to someone...ME! 
With that being said, I can only add one more thing, and this goes directly to YOU, Chan: I'm so incredibly proud of the progress you've made already! I am, and will always be your BIGGEST FAN!
I love ya, sweetheart!