Pretty sure I had some glitching issues this weekend with my 4PX with the original firmware. In the e-buggy heats and main every now and then when I applied just a bit of throttle the car would go full throttle for a split second. This was at a "big" race where the heats/mains were packed with 12 cars each. This was the first time having issues. Previous three club races with the same car, motor, esc had no issues. In the other class I ran with only 5 or so drivers, no issues all weekend.

In fairness I didn't think to turn the antenna vertical. In the 3rd e-buggy main I did turn it vertical and didn't notice a glitch. Coincidence or not I do not know. Still not to confident in it though as I wouldn't think the antenna being turned vertical should affect the 4PX not dealing well with other radio signals.

I'll flash the latest firmware this week.