P2z Load Capacity and Drive

Hello to all. I have an original single speed drive model and was wondering whether these can be upgraded to the newer multi speed unit. Is it the same motor etc and can you simply purchase the newer hand set. Also, when I purchased this off a fellow astromarter a year or so back my research showed this model with a load capacity of around 13lbs. I see now that they are advertised with a capacity of 20lbs. Is this perhaps tied up with the newer drive unit or has it simply been raised because of its performance.I have a Mewlon 180 sitting on it and it certainly feels at the top of its visual performance. Perhaps even this is too much.Thanks, Don in NZ

The 20lbs capacity must be some mistake. In TAK's official website, the capacity
of P2Z is still listed as 6kg, which is about 13lbs. See here:
http://www.takahashijapan.com/ct-products/products/P2-Z.html

Cheers,
Wei-Hao