Ok, last night I added 4-5 inch monster truck wheels to the agwagon. our field is wet, and muddy right now. On the test flight every thing went on. I did all the normal manuvers that sometimes had the begining of a flat spin after. I never had it try to flat spin, but I did stall it, and it was tip stalling side to side while falling.
Could these monster tires have stoped the the flat spin episode?
Im going to remover the wingtips this week and build the flat plate wing tip for it.
Perfect flying day, my biggest problem is the tire came off the rim on a landing, funniest thing Id ever seen.