1994 Polaris 300 2×4 W947530 bogs, surges, and bangs.

Hi all,
Could sure use some help. I purchased a non running 1994 Polaris 300 2×4 W947530. Rebuilt the carb and got it going. Was zipping around the yard no problem and then started fine tune the carb and it started to bog, surge, and bang.
Took apart the carb and recleaned it 2 more times and still have the problem. It will low idle all day with no problem but try to rev it and bog and surge starts up again.
The weird thing is that every once in a while it will rev fine so i will take it for a spin and in 100 yards it bogs down again.
I am out of ideas.

Here’s what I’ve done so far.
Rebuilt and cleaned carb. Float arms parallel per spec. All new parts from kit installed.
New non-ethanol premium gas premixed at 75 to 1
Oil pump works with amsoil intercepter oil (yes i am using more oil than needed just to be safe)
New battery
New starter and bendix
Etc works properly but has been disconnected for trouble shooting
Exhaust port is clear
*New fuel line and fuel filter installed

Any ideas appreciated.

Thx
Pigseye