To pull the poly thru the sleeve , go to a irrigation supplier and buy a chinese pipe grip  get a rope thru first then pull.  

are there warehouses ... direct window suppliers, direct flooring/doors/fixtures without home depot or someone like a Pella or Overhead Garage Door?

Example in our market PDX 2 million peeps we built 12k doors a year from 1992 until 2008  ( we were a little late to the crash)  in 2009  700 permits were pulled.who got affected.. literally anyone that touched construction.. from the builders the subs.. the suppliers the hard goods.. the appliances sellers.. etc etc.. and a lot of that work force rented. 

We are in need of more suppliers to feed our clients demand.

Not only for the value losses, but also for services EquityBuild paid to the General Contractor for construction and/or materials, which subsequently resulted in numerous Mechanic's Liens against the properties from the General Contractor failing to forward and pay those funds to many of the sub-contractors and suppliers performing the work.

We have partnered with one his suppliers with excellent success.  

My supplier also accounts for the 15% of people who move every year so that out-of-date addresses are, in large part, eliminated.From there, all that I need to do is direct mail the note holders.

I get licensed GCs coming down from NY & NJ looking for work who show me a license and tell me how hard it is to get, but some of them couldn't find their *** with both hands.)You need the ability to estimate and price a job accurately.You need the ability to hire good employees, find good subcontractors and maintain those relationships.You need the ability to negotiate pricing and terms with suppliers effectively - makes a big different with thin margins.You need the ability to work with clients and create win-win scenarios. 

Use the same appliance parts supplier and they’ll likely have them on file, but if not, you will.

You can always go to home depot and price materials until you feel comfortable and can start shopping at wholesale or discount suppliers.