RE: newby to this forum but back in ACADEMY mode!!
NISNO: Literally there are 2 parts that are compatible from the original version to the new Pro 2 version. Every other part is differnet, it doesnt pay to try and convert it. LIke I said above, there are 2 parts that are the same....thats it. Sorry that I couldnt help you further but the STR4 Pro II is in stock if you need to order one. Talk to you soon!