[44net] Mirotic unable to ping clients from none Net44

I am having hard time setting up Mikrotik to work withNet44. IP tunnel part is done, 44.60.73.1 (ether5) and 44.63.73.14 (ucsd-gw) can be reached from none Net44. As well as 44.60.73.2-44.60.73.13 if they were pinging from Net44. However, 44.60.73.2-44.60.73.13 were unreachable from the outside world. I have had Reaspberry Pi set up prior to Mikrotik and it work fine, no issue. I was trying to mimicking firewall rules and routing from Raspberry Pi to Mikrotik but Mikrotik was a different animal. I am sure, I did not set up firewall or route correctly on Mikrotik. Currently set up is: ISP > Home Router > Mikrotik (via DMZ) > clients (AMBE server, DVSWITCH and Echolink Proxy). Could anyone out there have similar setup using Mikrotik? 73, Kit HS0ZOE / W3KIT