I get 49.7V. Also, there is a definite improvement: the meter goes up, then down, then up again slowly. It stabilises in the low 20s, though, so I guess something is still wrong.

(That's after changing the resistor).

Also note that I get about 1.9 ohms resistance betweeen the two lugs of the meter, which I find weird. With the three 9.09 ohms resistance mounted in parallel, theoretical calculation show that I should have 3.03 ohms there (1/((1/9.09)*3). I've tested the three remaining resistances from the same set, they are 9.09 ohms, so I have a feeling something is off there.