problem with routing and gateways

[onlyx]

i have a Mikrotik router as a core router for my internal lan where the all routing happens and aopnsense firewall for nat and internet.
From a mikrotik i go with a 172.x.x.x/30 to opnsense and all the routes from mikrotik are via 2nd gateway on opnsense to mikrotik router back routet routes are ok ping is ok but only when the mikrotik is in NAT mode if i disable natting on mikrotik i loose connection to the otherside. Mikrotik have as default route the opnsense. how i can make that without natting that i can reach internet and the opnsense self for monitoringß Thx for any help to make this happen.

[onlyx]

From what i see on the floatint rules default deny action kicks it out. And i f i wanna make a rule i can not move above the default rules? so how i can disable this default rules?