I have an M135GX and having trouble with the following. Hard to start when it does start I can run usually around 5 hours and then it just idles down and stops. after it just spins over and may start after about an hour and a half but still takes a few minutes of it just turning over before starting. Once it stops and a turn key off and then back on the regen light comes on blinking. I replaced the 12volt fuel pump with an aftermarket type as well. Its acting like it looses the fuel prime when trying to start. Any help would be appreciated