Configurate Failover v6.41

Hi,

my head is burning right now…
Is there ANY working 2 WAN/ISP failover tutorial fpr MikrotikRouterOS 6.41?

I’ve currently tried nearly every tutorial i found.
The closest one was the one from helpadmin.pro (http://www.helpadmin.pro/how-to/how-to-mikrotik/how-to-mikrotik-failover/64/)

The access to the www is working but only with my main ISP Port - the second acts like he knows about nothing.
I scheduled the failover script but this wont work too,.

Can someone give me a good tutorial - video is ok too - how to configurate a working failover?

Thx in advance