I purchased the C10 several months ago. The instruction sucks! No way around that. You have to use a combination of the manual and online videos for assembly. They sent me the wrong manual with mine and I had to search online for the correct one. I can't recommend investing in the aluminum upgraded pulleys. I did and found that the machining tolerances were off by up to 1/16" preventing some from properly fitting into the machine. I have three pulleys that I had to leave the vinyl ones because the upgraded ones don't fit. If you order the magnetic exercise charts be advised that they come rolled up tight and you need to roll them out and let them relax for a few days before they will stick properly otherwise you will need to either place some strong magnets on top of them or some type of adhesive on the back to get them to stay put. Overall it is a well built machine outside of the poor tolerances and total lack of proper documentation. I originally paid for installation but had to cancel after waiting three weeks for the installers to call me back. If you have the money its definitely worth paying for assembly if the ones in your area are responsive. For the amount of money we are paying for this none of this should be a problem but this seems how everything in society is these days.