Sorry, i will correct scheme.first, if your clients are end user hosts, you do not need to set up pool for PD.
I have a similar problem http://forum.mikrotik.com/viewtopic.php?f=1&t=49153Thank you, you are fast.
Maybe it is good idea to try to fix this 7 and 4 irq conflicts to avoid rx drops and other problems ?
In my case, each upstream provider has its own instance.The problem is that you are using different instances for each BGP peer. There should be only one instance.