For a draft to get filled up you need to be creating an average of 14.3 previews daily for a week so if that's the case then you need to slow down and get some rest.
My oldest Draft is this one:
[b]Reserved for historic overview[/b]
1. http://loyce.club/trust/2019-01-25_Fri_22.33h
2. http://loyce.club/trust/2019-01-26_Sat_12.14h
(time and date are taken the moment I process the data (Amsterdam time), the data comes from the previous Saturday morning)
That was less than 21 hours ago.
A solution would be to increase the 100 drafts to 1000 drafts.