I had a neighbor like this and at first I was very responsive.

In an apartment building, the landlord is responsible for the HVAC unit(s), roof, water heaters, toilets, exterior of the building, windows, common areas, landscaping, etc.

Am I just as likely to get responses from these types of leads or am I better served to exclude them?

I signed a roof release that states the company will not be responsible for damage on the roof or any fittings on the roof.

We will then transfer title to the LLC upon closing (we have received lenders permission to do this).My question is, when we come to purchase another property will the lender view me as responsible for the whole mortgage debt and only 33.3% of the income?

You need to educate your tenants about taking personal responsibility, even when there is an emergency.

The previous owner said neither he nor I would be responsible for the security deposits given to the previous owner before him as these tenants have been in their units for many years. 

I plugged a phone number into a search engine and came up with nothing.BTW I found it odd that this website didn't alert me to the presence of these two responses.

When I asked this to those agents the response that I got was that they had looked at what other spaces were renting for in the area and went off of that.

I suspect it might be the reason they are selling but I might just be paranoid.The email said "I spoke with the listing agent and she said that the tenant hasn't been very responsive for showing so you would have to writ an offer subject to interior inspections.