Lets deal with one problem at a time here, Andrew you are all over the map.
Is the compression good on your saw ? is your Piston and Cylinder OEM or AfterMarket?
Have you Pressure tested and or Vac tested the assembly yet at all ?
I'm just trying to help point you in a direction, There are a lot of guy's on here a lot smarter then me and all will help you if you start answering some very simple questions, just trying to help that's all
Is the compression good on your saw ? is your Piston and Cylinder OEM or AfterMarket?
Have you Pressure tested and or Vac tested the assembly yet at all ?
I'm just trying to help point you in a direction, There are a lot of guy's on here a lot smarter then me and all will help you if you start answering some very simple questions, just trying to help that's all