Rob,
There are two possible setups for a machine with 16 or 16.9 oz water. First of all you need to be using a ribbed water bottle which I believe Poland Springs is.
For a wide column:
Setup 1: 4 - 3/32" tall waffle shims on each side of the column, red adjustable motor cam in the #3 hole, rear spacer in hole #13 counting from the front.
Setup 2: 4 - 3/32" tall waffle shims on each side of the column, 2 - 3/32" short shims on each side, red cam in hole #3, rear spacer in hole #18.
For a narrow column:
Setup 1: Can stop shim on the right (has a bottom lip of 3/8" to 1/2"). If your shim has a 1/4" lip is is a bottle shim which is also thinner on the side, Rod/spring in hole B of rotor, brown motor cam in hole #3 and rear spacer in hole #13.
Setup 2: Can stop shim on the right, 2 - rod/spring: one with a red tube in hole A and one with white tube in hole C of rotor, motor cam in hole #5, rear spacer in hole #18.
Holes in the ends of the rotors are named by position starting with the hole closest to the edge of the rotor being the A hole, middle hole is the B hole and the third hole from the edge is the C hole. In all cases the caps go toward the back of the machine. If your bottles are not horizontally ribbed from top to bottom, then they are probably too soft and will shrink when they get cold causing jams.
If you need any parts for the machine, I do have them in stock and can ship them to you.