Hi, 58 to 62 is perfect. My guess is you have a thermostat fitted, can't remember if you have it in a PAP chassis but I know PAP fit these as standard.
Regarding it being lumpy- your flying in Spain ??? Look at your needle setting.
For your climate the needle setting should be 2nd notch, I think you have it on the middle notch (3rd )
You need to move the clip 1notch leaner .
Mine is on the middle position in the uk. Come summer I will move mine and make it leaner.