bubble king mini 160/180/200 pump question

[lockrookie]

well i took it all apart and cleaned the pump. put it back together and it starts ..stops starts stops tries to start and just quits i think the main housing is burnt out impeller seems fine nothing loose. i see that the pump is glued to the round bottomplate is it difficult to remove this and replace it with a new pump. someone suggested a laguna pump would work. and or what would a replacement be for this pump i will post a pic shortly.