Yeh i got a set a week ago their petty mint i couldnt really feel the difference with the zoo forks and the zona what weigh 870g they seem pretty ridgid and not alot of flex..
Grind is were you run a angle grinder around the rim to ruffen it up and put a sharp surface so the pads work well and grip the grind and you might have a lazy pistons spray some lube on it.