I run a pool and haven't ever seen any stake in my pools TEK wallet, is there some secret to enabling staking or isn't it supported in the command line wallet?

My other theory is coins sent for mining payments are the 'oldest' in the wallet so I never have any of the same coins there for over 30 days. I've always got a balance in the wallet, i.e. its never empty so should I technically be receiving stake or not?