Knock on and off throttle perhaps not axel related

[Papa Hoc]

Good morning everybody. Northstar ultimate if it matters, has started the on off throttle click that you can hear pretty evident now. I know everybody has issues with axles, but I just don’t see anything they’re not loose. You can’t move them in or out up or down and I’m wondering if there’s other sources of this noise or if it is just the axles. Any help would be appreciated thanks in advance.