The 1052 Worked awesome on my full MOD 30.5. When I threw the 990 which Tim suggested it was a night and day difference and pretty amazing. I didn't think there was that much more left in the engine. I was absolutely speechless when I threw the full MOD 771 on the motor. That was downright crazyAll my engine's will come with the Wt-990 carbs for now on.
I'm having a bit of a hard time trying to find the sweet spot with my 990 on my zenoah. Top and mid are strong but I still get a little bog off the line. :banghead:They are both very easy to tune. I never had an issue tuning the 1052 and I've not had any issues tuning any 990 on any of my motors.