I flew my C-160 with O.S. 32's and the TwinSync this morning. Absolutely flawless, the TwinSync performed perfectly. I had some minor issues with carburation and idle on one engine (nothing to do with the TwinSync) but got them straightend out and all was fine. The .32's/TwinSync synced right up from the getgo. I now have two planes with TwinSync's installed, C-160 and HobbiCo TwinStar with O.S. 25's. The Dual Ace with O.S. .46's is next. Love the product, highly recommended.