I remember there being something about solo mining from wallet, after algo update, like I think you need to run stratum proxy or something. But, you should be able to set rpc and p2p ports to whatever you want in vertcoin.conf anyway. Maybe better to ask question here:

https://www.thisisvtc.com/forum6.html?sid=baa5179ebf7987182739b9956b1b51ba

or on /r/vertcoinmining on reddit...