Am I being scammed? (My first deal HELP!)

[Aaron Phillips]

I am currently trying to work with a guy who I think might be trying to pull a scam, but i'm not 100% certain. First I have been advertising all around my area attempting to gain leads, and I was contacted by this guy named Pat. Well I went to see his (Pat's) property, and it's ARV was around $70,000. I talked him down to $17,000. Well, I sent him the purchase agreement via Email.

This is where my suspicion began. I sent the contract from my business email and he claimed to have not received it. No big deal, could have been a delivery issue. So I resent him the email for the second time. The second time around he said he still hadn't received  it, and I asked him if it went to his spam folder, or click "all mail" in the event it was somewhere other than his primary inbox. Nope, nothing. So I told him (Pat) that I would be sending it from my other email, and apologized for him not receiving it. However, I was starting to get a little worried because he was out of town at that point and was not able to meet up for the contract signing. So I sent it from my other business email, and yet again he claimed to not have received it. So I told Pat that I would just hand deliver the contract agreement in person once he got back into town (Which at the time was supposed to be later that day) 

I went about 2 weeks with trying to get in touch with Pat with no success. Out of the blue he contacted me that he had received the contract in the mail, and needs to me to revise it. He said that he would like me to pay him first so that he can pay off what he has left owed on it. (Though the contract states that the buyer is not responsible for any taxes, mortgages, liens on the house) and I explained to Pat that I would need to get the contract signed, and he would be responsible for paying what is owed on it, and he said that would be fine. I asked when he would be available to sign, and no response.. 

A few days later I get another text from him saying "Can you add a few hundred dollars to the EMD? It shouldn't be that big of a deal anyway."

How should I go about handling this situation?