My mentor and I started a company together, about 4 months ago.

Originally we had a 50/50 split. We are both doing other jobs, I'm contracting full time for at least another month, but I'm putting in over 30 hours a week writing the software and creating all the sales material. My mentor is currently running a few other companies and is giving support via contacts and making things happen.

In a month I plan on not renewing my contract, and going all out on this start-up. To make things more complicated we also have a minor partner, who wants in on the equity. This minor partner is also willing to quit his full time and do this all out.

I'm in a tricky situation, I think the split needs to be adjusted, but I'm afraid of damaging relations.

Yes we have paying customers already, so this needs to be solved before we hockey stick.

Any tips?