I’ve been having a weird thing happening with my 420. If I fill both tanks and drive on the right tank at around half tank unbeknownst to me it somehow is feeding off the left tank at the same time. To my surprise when I switch to the left tank it was just above half. I had not used it since topping off and only running on the right side. I made sure each pump is running independently and checked the lines.
Fuel system was fully gone through, new pumps, filters in tanks new hoses and I have vented caps. I’m planning on topping the right only and use the left to see what happens.
Has anyone else experienced this?