Not good, not good, hope you recover well!
Read here for mixed product review:
'DCD Chain Tensioner
You're gear ratio is a tad high but understandable if commuting on
SS, other suggestion, how about a (Brian) Eno hub? Sorry, several of u
sitting around yesterday at the SS Nats were kicking back, drinking bee
& thought up a new name for these hubs. BTW, where were you? :