Hi, I agree with jackrae, R2 in your case is 220R but I don't think that should be a problem, but I'd measure it just in case.
Also check the orientation of D5 and D6, I notice that D5 on the schematic is D6 on the PCB, similarly D6 is D5.
Otherwise try using 330R for R2 incase this LM317 is a little off spec.
With the pot completely to gnd, you should have the 1.25V ouput that the LM317 regulates to.
Also measure the voltage across R4 it should be 1.25v, same for R2 but opposite polarity.
By the way nice layout, easy to follow and uncluttered.