I didn't get what You mean - You want to tell me they are too easy for You with All-In-One 2.8 (it was pb mm V3B16b) and they were harder in some previous version? Upgrade Your bots to V3B16c - either from
All-In-One 2.8a or from the
fullpack or just from
beta binaries (actually the same V3B16c - the most easy way to upgrade).