Pointbreakd, I had the same problem this should help you, paste the code below into | General Styling – Quick CSS.
Play with the max-width and margins, meaning chage them if you need to in the code, also upload a higher px logo. I don’t know the size of your logo but, 395 px worked for me.

@media only screen and (max-width: 990px) {
.responsive .logo a, .responsive .logo img {
max-width: 100%;
height: auto !important;
float: left;
margin-top: 5px!important;
}}