I am not unwilling to not do the deal because of it, we are actually trying to figure out how to get out of it. 

The fact you are posting on here tells me they are unwilling to help you make the hard decisions or even offer you guidance.

The seller is also looking to close at the end of November, and is unwilling to help remove any of the tenants before closing.

Renting our townhome, we had to give up our garage, which I was unwilling to do.

If the cost of any items were substantial, I would re-open negotiations with the owner realizing that he can simply inform me that he is unwilling to lower the price. 

If the LL is still unwilling to come to a compromise, then either they can take you to small claims court or you could take them. 

The reason I am unwilling to pay 43 percent upfront is because I don't have a relationship with the GC.

My friend may need to call a lawyer since it appears that criminal charges were filed against the previous property owner the day after the property changed hands and the solicitor is unwilling to answer any questions about said charges as my friend is not the named defendant yet was the legal owner at the time. 

If they are unwilling to consider offering mortgages for investment property should I look to a larger mortgage company or look for more creative financing options?

Long and short I held to my numbers (8-10% cash on cash) and the seller was unwilling to budge on his asking price.