I fly my UCD 46 with a Surpass .70 inverted. It runs absoutely fine, no flooding. I do ensure the carb is totally closed at shutdown (throttle kill switch on transmitter). Some guys use a Dubro fueler and keep the probe plugged in after fueling. I used a Cline on my UCD 60 with inverted Saito 100. Worked great until I couldn't start it one day - regulator failed. Took it off and I'm having a difficult time getting a good idle without it. I keep having to tweak the idle mixture. I've read from other RCU posts the diaphragm in the Cline lasts about 3 years. My Cline is 5 years old.