Re: Chain bound up in fromt sprocket
The front sprocket needs the teeth filed or groung a little to free up the chain. I've run into this on a couple kits. Also make sure the sprocket cover is not binding the chain. One kit I received was so bad it sounded like sticks breaking when the chain pulled on and off the sprocket teeth. Just knock the corners off and round the tips a tiny bit. and see if this helps.
If more is better, then too much is just enough.
If you can't afford it, build it yourself.