Hello all...new to the forum and in need of a bit of help. I recently bought a Vendo model 576 - 8 selection machine to sit in a friends barber shop. I bought the machine sight unseen for under 400 bucks so I think she is a good deal. I have 5 selections working perfectly vending soda pop 4 deep. the other 3 selections read sold out even when loaded. I have checked the micro switch on the selection buttons as well as all of the top micro switch's on the motors above the cams. All of those micro switches interchange with "working selections" and work flawlessly. Any ideas as to why this is reading "sold out" when its not???
Also I would like to be able to vend bottled water and possibly monster/red bull/rock star drinks. When I load bottled water in the machine it just jams up VERY easily....when it does not jam up it dispenses 2 waters at once. I have 2 white clips on the bottom of the product spacers.....do I need any different spacers or am I doing something else wrong?
Any insight would be tremendously appreciated!!! 
Have you gotten into the program mode and done a test vend on the three sold out slots. If the motors are not functioning or jammed it will go into the sold out mode until the jam is cleared or the bad motor replaced. 4 deep setups are prone to jams. I have set all my vendos for three deep because I got tired of unjamming the fouth can.
you can do this by moving the back spacer forward and reseting the cam on the front of the motor to position #3
If the motors all work I would next check the micro switch under the sold out flap and make sure there is a price programed for those slots.
As for the bottles the machine is set up for cans so you have to remove the shim inside the slot because the bottles are too fat. Then move the bar underneath, that has the two white clips to slot #3 and move the cam setting to #2 and that will allow you to put bottles in two deep. The only way I have found to do energy drinks that will not jam or vend two at a time is to do a one deep setup. Some of it depends on what brand and the size of the can. You have to play around with the shim and the bar underneath to see what works best.
Let us know what happens