Like the title says, I cracked the front bulkhead and took the front end apart to replace it. Finally got it all back together and turned it on and discovered a surprise. When I give it forward throttle the front tires spin in reverse while the rear tires spin forward as they should. When I give it reverse throttle the front tires spin forward while the rear tires spin in reverse as they should.
Please tell me I don't have to take the whole front end apart again. I've had just about enough "fun" out of this hobby without another half day shot turning tiny screws.