Movement your best choice (help needed)

[ironman18]

hi guys, happy holidays

here goes, im no expert in watch movements or tinkering with it so i need your help. 

I have a jmb 1016 and im planning to replace the movement because its running funny and stressing me out. I think its an asian 2824 with hacking. The problem is while wearing the watch and moving the wrist the movement stops then moves again if its shaken a bit. Causing the time to be late. Where in if its fully charged and left on the table it keeps accurate time. 

so now i dont know the best solution, either change the movement to a better one or get it repaired? What is your best choice for a robust movement for this build?

appreciate your help guys

PS: any trusty watch repair guys in aussie you can recommend? Im living in NZ and its hard to find good watchmakers here.