should or keep it the same?

[Rimrock]

Can understand you frustration..As mentioned in other threads, the first series Magom pumps are just of low quality, some work ok for a while, some works 'so-so' even when new..The new small Magom pump with tank is of higher quality..but it cost some bucks to invest in a new pump, and it's not 100% for sure that pump is the/only problem..
Do you got some fellows nearby that can lend you another pump to test in your machine?