Would love to connect and be a resource to you anyway that I can - I'm a realtor, and investor in the area and have some tips & tricks you can implement into your business and see if it helps! 

Anyone have a direct mail or postcard service they recommend for such a scenario?

Or what courses do you recommend?

I am the Vice President of OmniKey Realty, and I would highly recommend scheduling a tour with my investment team if you haven't already done so.

I recommend having a pricing software (pricelabs perhaps). 

Based on the info in your post, my recommendation would be to turn these assets into well oiled machines and max out their NOI.

If I have some cash do you recommend clearing the loan or invest instead for next property with proper planning ? 

I would recommend that you get out to local meetup events, as that is where you will make the really deep connections to help you get rolling. 

My recommendation:  Punt. 

Here’s my recommendation to get it under control: For a quick fix, start by sealing up any gaps using acoustic caulk around outlets, baseboards, or other small openings.