If you enjoy the power you are feeling comming form the MP at those setting then they are optimal. Conservative is good.
Some people may need more power for their uses and others have lighter frames and do less hill climbs maybe happy with saving more power and getting more distance.
Without looking at the numbers, take your bike for a ride and feel what you want. If you feel that you want to go faster on take offs and go up hills faster, or your are a person that has more weight to carry than others. set it higher.
If you really do not need more grunt, 20 amps continuous and 25 amps max is fine.
The Pie is rated at 1000 watts continuous. To stay within the motor warranty specs with the 36v pack and 42v hot do not push more than around 25A continuous and 30A max.
PS. If either motor or controller is getting to hot to the touch do set the AMPS lower.
