i too have found that the pgj charts are off. switched out pgj for pgp w/ low angle nozzlesI HATE to use a PGP or and I20 or for that matter a RB5000 to shoot 20feet or so....it irritates me.....I have no clue why.
Because of that, I use the PGJ and usually I am upset w/ the performance...is it just me, or do the nozzles not have the range according to the charts?
That being said, they are fairly reliable.....more so than the 3500 in my opinion, that POS, if you look at it wrong it breaks.....
Do you really use a regular rotor for 18-21 ranges?